{"id":261487,"date":"2023-07-20T09:00:00","date_gmt":"2023-07-20T07:00:00","guid":{"rendered":"https:\/\/sherpas.com\/blog\/?p=261487"},"modified":"2025-01-09T17:01:10","modified_gmt":"2025-01-09T16:01:10","slug":"isotope","status":"publish","type":"post","link":"https:\/\/sherpas.com\/blog\/isotope\/","title":{"rendered":"Isotope : d\u00e9couvre les \u00e9l\u00e9ments qui remontent le temps \u23f3"},"content":{"rendered":"\n<p>Lors de notre pr\u00e9c\u00e9dent article sur le <a href=\"https:\/\/sherpas.com\/blog\/tableau-de-mendeleiev\/\">tableau p\u00e9riodique des \u00e9l\u00e9ments<\/a>, on t\u2019a tr\u00e8s rapidement parl\u00e9 des isotopes. Le temps est venu de te faire une fiche sp\u00e9cifique sur le sujet pour que tu puisses le ma\u00eetriser pleinement. Ainsi, tu vas pouvoir te rendre compte que <strong>l\u2019isotope<\/strong>, en plus d\u2019\u00eatre \u00e9tudi\u00e9 \u00e0 l\u2019\u00e9cole, est aussi tr\u00e8s utile dans la vie de tous les jours. C\u2019est parti ! \ud83d\ude80<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Rappel sur l\u2019\u00e9criture d\u2019un \u00e9l\u00e9ment chimique \ud83d\udca1<\/h2>\n\n\n\n<p>Pour rep\u00e9rer un <a href=\"https:\/\/fr.wikipedia.org\/wiki\/Isotope\" target=\"_blank\" data-type=\"URL\" data-id=\"https:\/\/fr.wikipedia.org\/wiki\/Isotope\" rel=\"noreferrer noopener\">isotope<\/a>, il est important de bien conna\u00eetre l\u2019\u00e9criture d\u2019un \u00e9l\u00e9ment chimique, et de comprendre ce que repr\u00e9sentent les chiffres et lettres qui y sont inscrits.&nbsp;<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img decoding=\"async\" width=\"986\" height=\"804\" src=\"https:\/\/adymrxvmro.cloudimg.io\/v7\/sherpas.com\/blog\/content\/uploads\/2023\/07\/notation-element-chimique.jpg\" alt=\"Voil\u00e0 comment nomme un atome !\" class=\"wp-image-261489\" srcset=\"https:\/\/adymrxvmro.cloudimg.io\/v7\/sherpas.com\/content\/uploads\/2023\/07\/notation-element-chimique.jpg?w=986 986w, https:\/\/adymrxvmro.cloudimg.io\/v7\/sherpas.com\/content\/uploads\/2023\/07\/notation-element-chimique.jpg?w=300 300w, https:\/\/adymrxvmro.cloudimg.io\/v7\/sherpas.com\/content\/uploads\/2023\/07\/notation-element-chimique.jpg?w=768 768w, https:\/\/adymrxvmro.cloudimg.io\/v7\/sherpas.com\/content\/uploads\/2023\/07\/notation-element-chimique.jpg?w=153 153w, https:\/\/adymrxvmro.cloudimg.io\/v7\/sherpas.com\/content\/uploads\/2023\/07\/notation-element-chimique.jpg?w=334 334w, https:\/\/adymrxvmro.cloudimg.io\/v7\/sherpas.com\/content\/uploads\/2023\/07\/notation-element-chimique.jpg?w=288 288w, https:\/\/adymrxvmro.cloudimg.io\/v7\/sherpas.com\/content\/uploads\/2023\/07\/notation-element-chimique.jpg?w=455 455w, https:\/\/adymrxvmro.cloudimg.io\/v7\/sherpas.com\/content\/uploads\/2023\/07\/notation-element-chimique.jpg?w=265 265w, https:\/\/adymrxvmro.cloudimg.io\/v7\/sherpas.com\/content\/uploads\/2023\/07\/notation-element-chimique.jpg?w=60 60w, https:\/\/adymrxvmro.cloudimg.io\/v7\/sherpas.com\/content\/uploads\/2023\/07\/notation-element-chimique.jpg?w=320 320w, https:\/\/adymrxvmro.cloudimg.io\/v7\/sherpas.com\/content\/uploads\/2023\/07\/notation-element-chimique.jpg?w=576 576w, https:\/\/adymrxvmro.cloudimg.io\/v7\/sherpas.com\/content\/uploads\/2023\/07\/notation-element-chimique.jpg?w=940 940w, https:\/\/adymrxvmro.cloudimg.io\/v7\/sherpas.com\/content\/uploads\/2023\/07\/notation-element-chimique.jpg?w=1080 1080w\" sizes=\"(max-width: 986px) 100vw, 986px\" \/><\/figure><\/div>\n\n\n<ul class=\"wp-block-list\">\n<li>La grosse <strong>lettre au centre<\/strong>, ici repr\u00e9sent\u00e9e par le X, est toujours l<strong>e symbole de l\u2019\u00e9l\u00e9ment chimique dont il est question<\/strong>.&nbsp;<\/li>\n\n\n\n<li><strong>La lettre Z<\/strong>, situ\u00e9e en bas \u00e0 gauche, repr\u00e9sente le <strong>num\u00e9ro atomique de l\u2019atome<\/strong>. Ce num\u00e9ro atomique repr\u00e9sente <strong>les protons<\/strong> pr\u00e9sents dans le noyau.&nbsp;<\/li>\n\n\n\n<li><strong>La lettre A<\/strong>, situ\u00e9e en haut \u00e0 gauche, repr\u00e9sente <strong>le nombre de nucl\u00e9ons<\/strong> que contient l\u2019atome.&nbsp;<\/li>\n<\/ul>\n\n\n<section class=\"you-know\">\n                <div class=\"you-know__title\"><p>Rappel \u2728<\/p>\n<\/div>\n                        <div class=\"you-know__text\">\n            <p>Le noyau d\u2019un atome est compos\u00e9 de protons, qui sont charg\u00e9s positivement et de neutrons. On appelle cet ensemble les nucl\u00e9ons. \ud83d\ude2f<\/p>\n\n        <\/div>\n              <\/section>\n\n\n\n<p><strong>Pour qu\u2019un atome soit stable, il faut qu\u2019il y ait le m\u00eame nombre de protons que d\u2019\u00e9lectrons, qui eux sont charg\u00e9s n\u00e9gativement. <\/strong>Ainsi, les forces se compensent et l\u2019atome est consid\u00e9r\u00e9 comme stable \u00e9lectriquement.&nbsp;<\/p>\n\n\n\n<p>Si tu as encore des difficult\u00e9s avec l&#8217;\u00e9criture des \u00e9l\u00e9ments chimiques, n&#8217;h\u00e9site pas \u00e0 prendre un <a href=\"https:\/\/sherpas.com\/cours\/physique\" data-type=\"URL\" data-id=\"https:\/\/sherpas.com\/cours\/physique\">cours en ligne de physique-chimie<\/a> avec l&#8217;un de nos Sherpas. Il saura t&#8217;aider ! <\/p>\n\n\n<section class=\"push \">\n        <div >\n            \n                                                <div class=\"push__container  qcd\" data-target=\"_self\" data-qcd=\"aHR0cHM6Ly9zaGVycGFzLmNvbS9wcm9mZXNzZXVycz9zaWdudXA9dHJ1ZQ==\" data-banner=\"2\" data-name=\"Cours part&amp;#8217; global #1 = CPG1\" style=\"background-color: #F3FBF7\" >\n                                                                        <div class=\"push__teachers\">\n    <div class=\"d-flex justify-content-center d-md-none\">\n        <img decoding=\"async\" class=\"push__logo\" src=\"\/content\/themes\/sherpas-theme\/dist\/images\/logo.svg\" alt=\"Logo Sherpas\">\n    <\/div>\n    <div class=\"swiper\">\n        <div class=\"swiper-wrapper\">\n                                            <div class=\"swiper-slide\">\n                    <div class=\"push__teachers-card\">\n                        <div\n                            class=\"push__teachers-profil\"\n                            \n                            style=\"background-image: url(https:\/\/adymrxvmro.cloudimg.io\/v7\/sherpas.com\/content\/uploads\/2022\/01\/Emilie2x.jpg);\"\n                        >\n                    <\/div>\n                         <p class=\"push__teachers-name\">Emilie<\/p>                          <p class=\"push__teachers-school\">Sciences Po Lyon<\/p>                                                     <div class=\"push__teachers-note\">\n                                                                    <svg  class=\"active\" >\n                                        <use\n                                            xlink:href=\"\/content\/themes\/sherpas-theme\/dist\/images\/sprite.svg#star\"\/>\n                                    <\/svg>\n                                                                    <svg  class=\"active\" >\n                                        <use\n                                            xlink:href=\"\/content\/themes\/sherpas-theme\/dist\/images\/sprite.svg#star\"\/>\n                                    <\/svg>\n                                                                    <svg  class=\"active\" >\n                                        <use\n                                            xlink:href=\"\/content\/themes\/sherpas-theme\/dist\/images\/sprite.svg#star\"\/>\n                                    <\/svg>\n                                                                    <svg  class=\"active\" >\n                                        <use\n                                            xlink:href=\"\/content\/themes\/sherpas-theme\/dist\/images\/sprite.svg#star\"\/>\n                                    <\/svg>\n                                                                    <svg  class=\"active\" >\n                                        <use\n                                            xlink:href=\"\/content\/themes\/sherpas-theme\/dist\/images\/sprite.svg#star\"\/>\n                                    <\/svg>\n                                                            <\/div>\n                                                 <p class=\"push__teachers-price\">19\u20ac\/h<\/p>                     <\/div>\n                <\/div>\n                                            <div class=\"swiper-slide\">\n                    <div class=\"push__teachers-card\">\n                        <div\n                            class=\"push__teachers-profil\"\n                            \n                            style=\"background-image: url(https:\/\/adymrxvmro.cloudimg.io\/v7\/sherpas.com\/content\/uploads\/2022\/01\/Noemie2x.jpg);\"\n                        >\n                    <\/div>\n                         <p class=\"push__teachers-name\">No\u00e9mie<\/p>                          <p class=\"push__teachers-school\">M2 en droit \u00e0 Assas<\/p>                                                     <div class=\"push__teachers-note\">\n                                                                    <svg  class=\"active\" >\n                                        <use\n                                            xlink:href=\"\/content\/themes\/sherpas-theme\/dist\/images\/sprite.svg#star\"\/>\n                                    <\/svg>\n                                                                    <svg  class=\"active\" >\n                                        <use\n                                            xlink:href=\"\/content\/themes\/sherpas-theme\/dist\/images\/sprite.svg#star\"\/>\n                                    <\/svg>\n                                                                    <svg  class=\"active\" >\n                                        <use\n                                            xlink:href=\"\/content\/themes\/sherpas-theme\/dist\/images\/sprite.svg#star\"\/>\n                                    <\/svg>\n                                                                    <svg  class=\"active\" >\n                                        <use\n                                            xlink:href=\"\/content\/themes\/sherpas-theme\/dist\/images\/sprite.svg#star\"\/>\n                                    <\/svg>\n                                                                    <svg  class=\"active\" >\n                                        <use\n                                            xlink:href=\"\/content\/themes\/sherpas-theme\/dist\/images\/sprite.svg#star\"\/>\n                                    <\/svg>\n                                                            <\/div>\n                                                 <p class=\"push__teachers-price\">19\u20ac\/h<\/p>                     <\/div>\n                <\/div>\n                                            <div class=\"swiper-slide\">\n                    <div class=\"push__teachers-card\">\n                        <div\n                            class=\"push__teachers-profil\"\n                            \n                            style=\"background-image: url(https:\/\/adymrxvmro.cloudimg.io\/v7\/sherpas.com\/content\/uploads\/2022\/01\/Victor2x.jpg);\"\n                        >\n                    <\/div>\n                         <p class=\"push__teachers-name\">Victor<\/p>                          <p class=\"push__teachers-school\">ESCP<\/p>                                                     <div class=\"push__teachers-note\">\n                                                                    <svg  class=\"active\" >\n                                        <use\n                                            xlink:href=\"\/content\/themes\/sherpas-theme\/dist\/images\/sprite.svg#star\"\/>\n                                    <\/svg>\n                                                                    <svg  class=\"active\" >\n                                        <use\n                                            xlink:href=\"\/content\/themes\/sherpas-theme\/dist\/images\/sprite.svg#star\"\/>\n                                    <\/svg>\n                                                                    <svg  class=\"active\" >\n                                        <use\n                                            xlink:href=\"\/content\/themes\/sherpas-theme\/dist\/images\/sprite.svg#star\"\/>\n                                    <\/svg>\n                                                                    <svg  class=\"active\" >\n                                        <use\n                                            xlink:href=\"\/content\/themes\/sherpas-theme\/dist\/images\/sprite.svg#star\"\/>\n                                    <\/svg>\n                                                                    <svg  class=\"active\" >\n                                        <use\n                                            xlink:href=\"\/content\/themes\/sherpas-theme\/dist\/images\/sprite.svg#star\"\/>\n                                    <\/svg>\n                                                            <\/div>\n                                                 <p class=\"push__teachers-price\">25\u20ac\/h<\/p>                     <\/div>\n                <\/div>\n                                            <div class=\"swiper-slide\">\n                    <div class=\"push__teachers-card\">\n                        <div\n                            class=\"push__teachers-profil\"\n                            \n                            style=\"background-image: url(https:\/\/adymrxvmro.cloudimg.io\/v7\/sherpas.com\/content\/uploads\/2022\/01\/Fanny2x.jpg);\"\n                        >\n                    <\/div>\n                         <p class=\"push__teachers-name\">Fanny<\/p>                          <p class=\"push__teachers-school\">Ponts ParisTech<\/p>                                                     <div class=\"push__teachers-note\">\n                                                                    <svg  class=\"active\" >\n                                        <use\n                                            xlink:href=\"\/content\/themes\/sherpas-theme\/dist\/images\/sprite.svg#star\"\/>\n                                    <\/svg>\n                                                                    <svg  class=\"active\" >\n                                        <use\n                                            xlink:href=\"\/content\/themes\/sherpas-theme\/dist\/images\/sprite.svg#star\"\/>\n                                    <\/svg>\n                                                                    <svg  class=\"active\" >\n                                        <use\n                                            xlink:href=\"\/content\/themes\/sherpas-theme\/dist\/images\/sprite.svg#star\"\/>\n                                    <\/svg>\n                                                                    <svg  class=\"active\" >\n                                        <use\n                                            xlink:href=\"\/content\/themes\/sherpas-theme\/dist\/images\/sprite.svg#star\"\/>\n                                    <\/svg>\n                                                                    <svg  class=\"active\" >\n                                        <use\n                                            xlink:href=\"\/content\/themes\/sherpas-theme\/dist\/images\/sprite.svg#star\"\/>\n                                    <\/svg>\n                                                            <\/div>\n                                                 <p class=\"push__teachers-price\">19\u20ac\/h<\/p>                     <\/div>\n                <\/div>\n                                            <div class=\"swiper-slide\">\n                    <div class=\"push__teachers-card\">\n                        <div\n                            class=\"push__teachers-profil\"\n                            \n                            style=\"background-image: url(https:\/\/adymrxvmro.cloudimg.io\/v7\/sherpas.com\/content\/uploads\/2022\/01\/Jade2x.jpg);\"\n                        >\n                    <\/div>\n                         <p class=\"push__teachers-name\">Jade<\/p>                          <p class=\"push__teachers-school\">Sciences Po Paris<\/p>                                                     <div class=\"push__teachers-note\">\n                                                                    <svg  class=\"active\" >\n                                        <use\n                                            xlink:href=\"\/content\/themes\/sherpas-theme\/dist\/images\/sprite.svg#star\"\/>\n                                    <\/svg>\n                                                                    <svg  class=\"active\" >\n                                        <use\n                                            xlink:href=\"\/content\/themes\/sherpas-theme\/dist\/images\/sprite.svg#star\"\/>\n                                    <\/svg>\n                                                                    <svg  class=\"active\" >\n                                        <use\n                                            xlink:href=\"\/content\/themes\/sherpas-theme\/dist\/images\/sprite.svg#star\"\/>\n                                    <\/svg>\n                                                                    <svg  class=\"active\" >\n                                        <use\n                                            xlink:href=\"\/content\/themes\/sherpas-theme\/dist\/images\/sprite.svg#star\"\/>\n                                    <\/svg>\n                                                                    <svg  class=\"active\" >\n                                        <use\n                                            xlink:href=\"\/content\/themes\/sherpas-theme\/dist\/images\/sprite.svg#star\"\/>\n                                    <\/svg>\n                                                            <\/div>\n                                                 <p class=\"push__teachers-price\">21\u20ac\/h<\/p>                     <\/div>\n                <\/div>\n                                            <div class=\"swiper-slide\">\n                    <div class=\"push__teachers-card\">\n                        <div\n                            class=\"push__teachers-profil\"\n                            \n                            style=\"background-image: url(https:\/\/adymrxvmro.cloudimg.io\/v7\/sherpas.com\/content\/uploads\/2022\/01\/Pierre2x.png);\"\n                        >\n                    <\/div>\n                         <p class=\"push__teachers-name\">Pierre<\/p>                          <p class=\"push__teachers-school\">ESSEC<\/p>                                                     <div class=\"push__teachers-note\">\n                                                                    <svg  class=\"active\" >\n                                        <use\n                                            xlink:href=\"\/content\/themes\/sherpas-theme\/dist\/images\/sprite.svg#star\"\/>\n                                    <\/svg>\n                                                                    <svg  class=\"active\" >\n                                        <use\n                                            xlink:href=\"\/content\/themes\/sherpas-theme\/dist\/images\/sprite.svg#star\"\/>\n                                    <\/svg>\n                                                                    <svg  class=\"active\" >\n                                        <use\n                                            xlink:href=\"\/content\/themes\/sherpas-theme\/dist\/images\/sprite.svg#star\"\/>\n                                    <\/svg>\n                                                                    <svg  class=\"active\" >\n                                        <use\n                                            xlink:href=\"\/content\/themes\/sherpas-theme\/dist\/images\/sprite.svg#star\"\/>\n                                    <\/svg>\n                                                                    <svg  class=\"active\" >\n                                        <use\n                                            xlink:href=\"\/content\/themes\/sherpas-theme\/dist\/images\/sprite.svg#star\"\/>\n                                    <\/svg>\n                                                            <\/div>\n                                                 <p class=\"push__teachers-price\">16\u20ac\/h<\/p>                     <\/div>\n                <\/div>\n                                            <div class=\"swiper-slide\">\n                    <div class=\"push__teachers-card\">\n                        <div\n                            class=\"push__teachers-profil\"\n                            \n                            style=\"background-image: url(https:\/\/adymrxvmro.cloudimg.io\/v7\/sherpas.com\/content\/uploads\/2022\/01\/Hugo2x.jpg);\"\n                        >\n                    <\/div>\n                         <p class=\"push__teachers-name\">Hugo<\/p>                          <p class=\"push__teachers-school\">Insa Lyon<\/p>                                                     <div class=\"push__teachers-note\">\n                                                                    <svg  class=\"active\" >\n                                        <use\n                                            xlink:href=\"\/content\/themes\/sherpas-theme\/dist\/images\/sprite.svg#star\"\/>\n                                    <\/svg>\n                                                                    <svg  class=\"active\" >\n                                        <use\n                                            xlink:href=\"\/content\/themes\/sherpas-theme\/dist\/images\/sprite.svg#star\"\/>\n                                    <\/svg>\n                                                                    <svg  class=\"active\" >\n                                        <use\n                                            xlink:href=\"\/content\/themes\/sherpas-theme\/dist\/images\/sprite.svg#star\"\/>\n                                    <\/svg>\n                                                                    <svg  class=\"active\" >\n                                        <use\n                                            xlink:href=\"\/content\/themes\/sherpas-theme\/dist\/images\/sprite.svg#star\"\/>\n                                    <\/svg>\n                                                                    <svg >\n                                        <use\n                                            xlink:href=\"\/content\/themes\/sherpas-theme\/dist\/images\/sprite.svg#star\"\/>\n                                    <\/svg>\n                                                            <\/div>\n                                                 <p class=\"push__teachers-price\">16\u20ac\/h<\/p>                     <\/div>\n                <\/div>\n                                            <div class=\"swiper-slide\">\n                    <div class=\"push__teachers-card\">\n                        <div\n                            class=\"push__teachers-profil\"\n                            \n                            style=\"background-image: url(https:\/\/adymrxvmro.cloudimg.io\/v7\/sherpas.com\/content\/uploads\/2022\/01\/Nicolas2x.png);\"\n                        >\n                    <\/div>\n                         <p class=\"push__teachers-name\">Nicolas<\/p>                          <p class=\"push__teachers-school\">CentraleSup\u00e9lec<\/p>                                                     <div class=\"push__teachers-note\">\n                                                                    <svg  class=\"active\" >\n                                        <use\n                                            xlink:href=\"\/content\/themes\/sherpas-theme\/dist\/images\/sprite.svg#star\"\/>\n                                    <\/svg>\n                                                                    <svg  class=\"active\" >\n                                        <use\n                                            xlink:href=\"\/content\/themes\/sherpas-theme\/dist\/images\/sprite.svg#star\"\/>\n                                    <\/svg>\n                                                                    <svg  class=\"active\" >\n                                        <use\n                                            xlink:href=\"\/content\/themes\/sherpas-theme\/dist\/images\/sprite.svg#star\"\/>\n                                    <\/svg>\n                                                                    <svg  class=\"active\" >\n                                        <use\n                                            xlink:href=\"\/content\/themes\/sherpas-theme\/dist\/images\/sprite.svg#star\"\/>\n                                    <\/svg>\n                                                                    <svg  class=\"active\" >\n                                        <use\n                                            xlink:href=\"\/content\/themes\/sherpas-theme\/dist\/images\/sprite.svg#star\"\/>\n                                    <\/svg>\n                                                            <\/div>\n                                                 <p class=\"push__teachers-price\">17\u20ac\/h<\/p>                     <\/div>\n                <\/div>\n                    <\/div>\n    <\/div>\n<\/div>\n                                                    <div class=\"push__content\">\n                                                            <div  class=\"d-none d-md-block\" >\n                                    <img decoding=\"async\" class=\"push__logo\" src=\"\/content\/themes\/sherpas-theme\/dist\/images\/logo.svg\"\n                                        alt=\"Logo Sherpas\">\n                                <\/div>\n                                                                                        <div class=\"push__title\"><p>Ton premier cours particulier est offert ! <span role=\"img\" aria-label=\"\ud83c\udf81\">\ud83c\udf81<\/span><!-- notionvc: 91b6b7d7-50f2-46f4-ae1f-ecbabe834aad --><\/p>\n<\/div>\n                                                                                        <div class=\"push__text\"><p>Nos profs sont pass\u00e9s par les meilleures \u00e9coles et universit\u00e9s.<!-- notionvc: 21bb66b6-b36d-4ce8-8950-173722d75a1e --><\/p>\n<p>&nbsp;<\/p>\n<\/div>\n                                                        <div class=\"push__promo-button   \">\n                                                                                                    <div\n                                        class=\"btn btn-primary\"\n                                        style=\"color: #ffffff; border-color: ; background-color: \"\n\n                                    >\n                                        J&#8217;EN PROFITE MAINTENANT !\n                                    <\/div>\n                                                            <\/div>\n                                                    <\/div>\n                                    <\/div>\n                                    <\/div>\n    <\/section>\n\n\n\n<h2 class=\"wp-block-heading\">Qu\u2019est-ce que les isotopes ? \ud83e\udd14<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">D\u00e9finition d\u2019un isotope &nbsp; \u2728<\/h3>\n\n\n\n<p>Les isotopes sont des atomes qui ont le m\u00eame num\u00e9ro atomique Z, soit le m\u00eame nombre de protons. Mais, un nombre de nucl\u00e9ons A diff\u00e9rent.&nbsp;<\/p>\n\n\n\n<p><strong>\ud83d\udc49 Voici un exemple d\u2019isotopes :<\/strong><\/p>\n\n\n\n<p>L\u2019atome d\u2019hydrog\u00e8ne poss\u00e8de deux isotopes. L\u2019atome principal contient un proton et un nucl\u00e9on.&nbsp;<\/p>\n\n\n\n<p>Le premier isotope contient un proton et deux nucl\u00e9ons.&nbsp;<\/p>\n\n\n\n<p>Enfin, le deuxi\u00e8me isotope de l\u2019hydrog\u00e8ne contient un proton et trois nucl\u00e9ons.&nbsp;<\/p>\n\n\n\n<p>Pour te permettre de mieux comprendre ce que l&#8217;on te raconte, on te propose de d\u00e9couvrir les sch\u00e9mas ci-dessous. Ils symbolisent les isotopes de l\u2019hydrog\u00e8ne.&nbsp;<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" width=\"1920\" height=\"1011\" src=\"https:\/\/adymrxvmro.cloudimg.io\/v7\/sherpas.com\/blog\/content\/uploads\/2023\/07\/isotopes-1.jpg?func=bound&amp;w=1024&amp;h=1011\" alt=\"\" class=\"wp-image-261532\" srcset=\"https:\/\/adymrxvmro.cloudimg.io\/v7\/sherpas.com\/content\/uploads\/2023\/07\/isotopes-1.jpg?w=1920 1920w, https:\/\/adymrxvmro.cloudimg.io\/v7\/sherpas.com\/content\/uploads\/2023\/07\/isotopes-1.jpg?w=300 300w, https:\/\/adymrxvmro.cloudimg.io\/v7\/sherpas.com\/content\/uploads\/2023\/07\/isotopes-1.jpg?w=1024 1024w, https:\/\/adymrxvmro.cloudimg.io\/v7\/sherpas.com\/content\/uploads\/2023\/07\/isotopes-1.jpg?w=768 768w, https:\/\/adymrxvmro.cloudimg.io\/v7\/sherpas.com\/content\/uploads\/2023\/07\/isotopes-1.jpg?w=1536 1536w, https:\/\/adymrxvmro.cloudimg.io\/v7\/sherpas.com\/content\/uploads\/2023\/07\/isotopes-1.jpg?w=200 200w, https:\/\/adymrxvmro.cloudimg.io\/v7\/sherpas.com\/content\/uploads\/2023\/07\/isotopes-1.jpg?w=396 396w, https:\/\/adymrxvmro.cloudimg.io\/v7\/sherpas.com\/content\/uploads\/2023\/07\/isotopes-1.jpg?w=288 288w, https:\/\/adymrxvmro.cloudimg.io\/v7\/sherpas.com\/content\/uploads\/2023\/07\/isotopes-1.jpg?w=610 610w, https:\/\/adymrxvmro.cloudimg.io\/v7\/sherpas.com\/content\/uploads\/2023\/07\/isotopes-1.jpg?w=265 265w, https:\/\/adymrxvmro.cloudimg.io\/v7\/sherpas.com\/content\/uploads\/2023\/07\/isotopes-1.jpg?w=60 60w, https:\/\/adymrxvmro.cloudimg.io\/v7\/sherpas.com\/content\/uploads\/2023\/07\/isotopes-1.jpg?w=320 320w, https:\/\/adymrxvmro.cloudimg.io\/v7\/sherpas.com\/content\/uploads\/2023\/07\/isotopes-1.jpg?w=576 576w, https:\/\/adymrxvmro.cloudimg.io\/v7\/sherpas.com\/content\/uploads\/2023\/07\/isotopes-1.jpg?w=940 940w, https:\/\/adymrxvmro.cloudimg.io\/v7\/sherpas.com\/content\/uploads\/2023\/07\/isotopes-1.jpg?w=1080 1080w\" sizes=\"(max-width: 1920px) 100vw, 1920px\" \/><\/figure>\n\n\n<section class=\"you-know\">\n                <div class=\"you-know__title\"><p>\ud83d\udc49 Ainsi, on peut \u00e9crire un principe<\/p>\n<\/div>\n                        <div class=\"you-know__text\">\n            <p><!-- wp:list --><\/p>\n<p>Sont des isotopes s\u2019ils ont:<\/p>\n<ul><!-- wp:list-item --><\/p>\n<li>le m\u00eame symbole ;<\/li>\n<p><!-- \/wp:list-item --> <!-- wp:list-item --><\/p>\n<li>le m\u00eame nombre de protons ;<\/li>\n<p><!-- \/wp:list-item --> <!-- wp:list-item --><\/p>\n<li>le m\u00eame nombre d\u2019\u00e9lectrons ;<\/li>\n<p><!-- \/wp:list-item --> <!-- wp:list-item --><\/p>\n<li>la m\u00eame charge positive dans le noyau ;<\/li>\n<p><!-- \/wp:list-item --> <!-- wp:list-item --><\/p>\n<li>la m\u00eame charge n\u00e9gative dans le cort\u00e8ge \u00e9lectronique.<\/li>\n<p><!-- \/wp:list-item --><\/ul>\n<p><!-- \/wp:list --><\/p>\n\n        <\/div>\n              <\/section>\n\n\n\n<h3 class=\"wp-block-heading\">Les isotopes naturels et artificiels \ud83c\udf3f<\/h3>\n\n\n\n<p>Certains isotopes sont cr\u00e9\u00e9s produits par la nature. D\u2019autres ont \u00e9t\u00e9 cr\u00e9\u00e9s par les scientifiques pour des besoins \u00e9nerg\u00e9tiques.&nbsp;<\/p>\n\n\n\n<p>\ud83d\udc49 Ainsi, le <strong>carbone<\/strong> poss\u00e8de plusieurs isotopes. Le carbone 12, carbone 13 et le carbone 14, qui a un r\u00f4le particulier (suspense, on te le r\u00e9v\u00e9lera plus tard), sont tous issus de la nature. \ud83c\udf33<\/p>\n\n\n\n<p>\ud83d\udc49 <strong>L\u2019uranium<\/strong> est aussi un atome qui poss\u00e8de plusieurs isotopes. L\u2019uranium 232, l\u2019uranium 233 et l\u2019uranium 236 ont \u00e9t\u00e9 fabriqu\u00e9s par l\u2019homme. Ils r\u00e9pondent \u00e0 un besoin d\u2019\u00e9nergie et d\u2019armement, en particulier pour la bombe nucl\u00e9aire. \u2622\ufe0f<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large\"><img decoding=\"async\" src=\"https:\/\/media.giphy.com\/media\/xUA7aPhCAs5QRvMMJa\/giphy.gif\" alt=\"Les isotopes viennent de la nature \" \/><\/figure><\/div>\n\n\n<h3 class=\"wp-block-heading\">Les isotopes stables et les isotopes radioactifs \u2622\ufe0f<\/h3>\n\n\n\n<p>Certains isotopes sont stables et d\u2019autres ne le sont pas. <strong>Ainsi, ceux qui ne sont pas stables sont consid\u00e9r\u00e9s comme radioactifs. <\/strong>Ils vont se d\u00e9sint\u00e9grer au fur et \u00e0 mesure et \u00e9mettre des radiations durant la d\u00e9sint\u00e9gration.&nbsp;<\/p>\n\n\n\n<p>\ud83d\udc49 Exemples :&nbsp;<\/p>\n\n\n\n<p>Reprenons notre Carbone. Les isotopes 12 et 13 sont stables alors que le carbone 14, lui, ne l\u2019est pas. C\u2019est pourquoi il est utilis\u00e9 par les scientifiques pour dater de l\u2019eau ainsi que toute forme de vie sur terre. \ud83d\ude2f&nbsp;<\/p>\n\n\n<section class=\"read-also\">\n    <p class=\"read-also__title\">\u00c0 lire aussi<\/p>\n            <div class=\"read-also__list\">\n            <p>N&#8217;h\u00e9site pas \u00e0 lire notre article sur la <a href=\"https:\/\/sherpas.com\/blog\/radioactivite\/\">radioactivit\u00e9<\/a> !<\/p>\n\n        <\/div>\n    <\/section>\n\n\n\n<p>Si on reprend aussi notre Uranium, pour le coup, c&#8217;est tr\u00e8s simple,<strong> tous ses isotopes naturels sont instables<\/strong>.\u00a0<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large\"><img decoding=\"async\" src=\"https:\/\/media.giphy.com\/media\/l2Jeit9nnfScP4mS4\/giphy.gif\" alt=\"Heureusement que Homer ne manipule pas les Isotopes \" \/><\/figure><\/div>\n\n<section class=\"you-know\">\n                <div class=\"you-know__title\"><p>Pour info \ud83d\udca1<\/p>\n<\/div>\n                        <div class=\"you-know__text\">\n            <p>Les isotopes radioactifs peuvent aussi \u00eatre appel\u00e9s <strong>radionucl\u00e9ides<\/strong> ou <strong>radio-isotopes<\/strong>.<\/p>\n\n        <\/div>\n              <\/section>\n\n\n<section class=\"push \">\n        <div >\n            \n                                                <div class=\"push__container  qcd\" data-target=\"_self\" data-qcd=\"aHR0cHM6Ly9zaGVycGFzLmNvbS9wcm9mZXNzZXVycz9zaWdudXA9dHJ1ZQ==\" data-banner=\"2\" data-name=\"Cours part&amp;#8217; global #2 = CPG2\" style=\"background-color: #F3FBF7\" >\n                                                                        <div class=\"push__teachers\">\n    <div class=\"d-flex justify-content-center d-md-none\">\n        <img decoding=\"async\" class=\"push__logo\" src=\"\/content\/themes\/sherpas-theme\/dist\/images\/logo.svg\" alt=\"Logo Sherpas\">\n    <\/div>\n    <div class=\"swiper\">\n        <div class=\"swiper-wrapper\">\n                                            <div class=\"swiper-slide\">\n                    <div class=\"push__teachers-card\">\n                        <div\n                            class=\"push__teachers-profil\"\n                            \n                            style=\"background-image: url(https:\/\/adymrxvmro.cloudimg.io\/v7\/sherpas.com\/content\/uploads\/2022\/01\/Cle\u0301mence2x.png);\"\n                        >\n                    <\/div>\n                         <p class=\"push__teachers-name\">Cl\u00e9mence<\/p>                          <p class=\"push__teachers-school\">HEC Paris<\/p>                                                     <div class=\"push__teachers-note\">\n                                                                    <svg  class=\"active\" >\n                                        <use\n                                            xlink:href=\"\/content\/themes\/sherpas-theme\/dist\/images\/sprite.svg#star\"\/>\n                                    <\/svg>\n                                                                    <svg  class=\"active\" >\n                                        <use\n                                            xlink:href=\"\/content\/themes\/sherpas-theme\/dist\/images\/sprite.svg#star\"\/>\n                                    <\/svg>\n                                                                    <svg  class=\"active\" >\n                                        <use\n                                            xlink:href=\"\/content\/themes\/sherpas-theme\/dist\/images\/sprite.svg#star\"\/>\n                                    <\/svg>\n                                                                    <svg  class=\"active\" >\n                                        <use\n                                            xlink:href=\"\/content\/themes\/sherpas-theme\/dist\/images\/sprite.svg#star\"\/>\n                                    <\/svg>\n                                                                    <svg  class=\"active\" >\n                                        <use\n                                            xlink:href=\"\/content\/themes\/sherpas-theme\/dist\/images\/sprite.svg#star\"\/>\n                                    <\/svg>\n                                                            <\/div>\n                                                 <p class=\"push__teachers-price\">21\u20ac\/h\/h<\/p>                     <\/div>\n                <\/div>\n                                            <div class=\"swiper-slide\">\n                    <div class=\"push__teachers-card\">\n                        <div\n                            class=\"push__teachers-profil\"\n                            \n                            style=\"background-image: url(https:\/\/adymrxvmro.cloudimg.io\/v7\/sherpas.com\/content\/uploads\/2022\/01\/Thibault2x.png);\"\n                        >\n                    <\/div>\n                         <p class=\"push__teachers-name\">Thibault<\/p>                          <p class=\"push__teachers-school\">ENS Paris Ulm<\/p>                                                     <div class=\"push__teachers-note\">\n                                                                    <svg  class=\"active\" >\n                                        <use\n                                            xlink:href=\"\/content\/themes\/sherpas-theme\/dist\/images\/sprite.svg#star\"\/>\n                                    <\/svg>\n                                                                    <svg  class=\"active\" >\n                                        <use\n                                            xlink:href=\"\/content\/themes\/sherpas-theme\/dist\/images\/sprite.svg#star\"\/>\n                                    <\/svg>\n                                                                    <svg  class=\"active\" >\n                                        <use\n                                            xlink:href=\"\/content\/themes\/sherpas-theme\/dist\/images\/sprite.svg#star\"\/>\n                                    <\/svg>\n                                                                    <svg  class=\"active\" >\n                                        <use\n                                            xlink:href=\"\/content\/themes\/sherpas-theme\/dist\/images\/sprite.svg#star\"\/>\n                                    <\/svg>\n                                                                    <svg  class=\"active\" >\n                                        <use\n                                            xlink:href=\"\/content\/themes\/sherpas-theme\/dist\/images\/sprite.svg#star\"\/>\n                                    <\/svg>\n                                                            <\/div>\n                                                 <p class=\"push__teachers-price\">20\u20ac\/h<\/p>                     <\/div>\n                <\/div>\n                                            <div class=\"swiper-slide\">\n                    <div class=\"push__teachers-card\">\n                        <div\n                            class=\"push__teachers-profil\"\n                            \n                            style=\"background-image: url(https:\/\/adymrxvmro.cloudimg.io\/v7\/sherpas.com\/content\/uploads\/2022\/01\/Sophie2x.png);\"\n                        >\n                    <\/div>\n                         <p class=\"push__teachers-name\">Sophie<\/p>                          <p class=\"push__teachers-school\">Sciences Po Bordeaux<\/p>                                                     <div class=\"push__teachers-note\">\n                                                                    <svg  class=\"active\" >\n                                        <use\n                                            xlink:href=\"\/content\/themes\/sherpas-theme\/dist\/images\/sprite.svg#star\"\/>\n                                    <\/svg>\n                                                                    <svg  class=\"active\" >\n                                        <use\n                                            xlink:href=\"\/content\/themes\/sherpas-theme\/dist\/images\/sprite.svg#star\"\/>\n                                    <\/svg>\n                                                                    <svg  class=\"active\" >\n                                        <use\n                                            xlink:href=\"\/content\/themes\/sherpas-theme\/dist\/images\/sprite.svg#star\"\/>\n                                    <\/svg>\n                                                                    <svg  class=\"active\" >\n                                        <use\n                                            xlink:href=\"\/content\/themes\/sherpas-theme\/dist\/images\/sprite.svg#star\"\/>\n                                    <\/svg>\n                                                                    <svg >\n                                        <use\n                                            xlink:href=\"\/content\/themes\/sherpas-theme\/dist\/images\/sprite.svg#star\"\/>\n                                    <\/svg>\n                                                            <\/div>\n                                                 <p class=\"push__teachers-price\">12\u20ac\/h<\/p>                     <\/div>\n                <\/div>\n                                            <div class=\"swiper-slide\">\n                    <div class=\"push__teachers-card\">\n                        <div\n                            class=\"push__teachers-profil\"\n                            \n                            style=\"background-image: url(https:\/\/adymrxvmro.cloudimg.io\/v7\/sherpas.com\/content\/uploads\/2022\/01\/Noemie2x.jpg);\"\n                        >\n                    <\/div>\n                         <p class=\"push__teachers-name\">No\u00e9mie<\/p>                          <p class=\"push__teachers-school\">M2 en droit \u00e0 Assas<\/p>                                                     <div class=\"push__teachers-note\">\n                                                                    <svg  class=\"active\" >\n                                        <use\n                                            xlink:href=\"\/content\/themes\/sherpas-theme\/dist\/images\/sprite.svg#star\"\/>\n                                    <\/svg>\n                                                                    <svg  class=\"active\" >\n                                        <use\n                                            xlink:href=\"\/content\/themes\/sherpas-theme\/dist\/images\/sprite.svg#star\"\/>\n                                    <\/svg>\n                                                                    <svg  class=\"active\" >\n                                        <use\n                                            xlink:href=\"\/content\/themes\/sherpas-theme\/dist\/images\/sprite.svg#star\"\/>\n                                    <\/svg>\n                                                                    <svg  class=\"active\" >\n                                        <use\n                                            xlink:href=\"\/content\/themes\/sherpas-theme\/dist\/images\/sprite.svg#star\"\/>\n                                    <\/svg>\n                                                                    <svg  class=\"active\" >\n                                        <use\n                                            xlink:href=\"\/content\/themes\/sherpas-theme\/dist\/images\/sprite.svg#star\"\/>\n                                    <\/svg>\n                                                            <\/div>\n                                                 <p class=\"push__teachers-price\">19\u20ac\/h<\/p>                     <\/div>\n                <\/div>\n                                            <div class=\"swiper-slide\">\n                    <div class=\"push__teachers-card\">\n                        <div\n                            class=\"push__teachers-profil\"\n                            \n                            style=\"background-image: url(https:\/\/adymrxvmro.cloudimg.io\/v7\/sherpas.com\/content\/uploads\/2022\/01\/Fanny2x.jpg);\"\n                        >\n                    <\/div>\n                         <p class=\"push__teachers-name\">Fanny<\/p>                          <p class=\"push__teachers-school\">Ponts ParisTech<\/p>                                                     <div class=\"push__teachers-note\">\n                                                                    <svg  class=\"active\" >\n                                        <use\n                                            xlink:href=\"\/content\/themes\/sherpas-theme\/dist\/images\/sprite.svg#star\"\/>\n                                    <\/svg>\n                                                                    <svg  class=\"active\" >\n                                        <use\n                                            xlink:href=\"\/content\/themes\/sherpas-theme\/dist\/images\/sprite.svg#star\"\/>\n                                    <\/svg>\n                                                                    <svg  class=\"active\" >\n                                        <use\n                                            xlink:href=\"\/content\/themes\/sherpas-theme\/dist\/images\/sprite.svg#star\"\/>\n                                    <\/svg>\n                                                                    <svg  class=\"active\" >\n                                        <use\n                                            xlink:href=\"\/content\/themes\/sherpas-theme\/dist\/images\/sprite.svg#star\"\/>\n                                    <\/svg>\n                                                                    <svg  class=\"active\" >\n                                        <use\n                                            xlink:href=\"\/content\/themes\/sherpas-theme\/dist\/images\/sprite.svg#star\"\/>\n                                    <\/svg>\n                                                            <\/div>\n                                                 <p class=\"push__teachers-price\">19\u20ac\/h<\/p>                     <\/div>\n                <\/div>\n                                            <div class=\"swiper-slide\">\n                    <div class=\"push__teachers-card\">\n                        <div\n                            class=\"push__teachers-profil\"\n                            \n                            style=\"background-image: url(https:\/\/adymrxvmro.cloudimg.io\/v7\/sherpas.com\/content\/uploads\/2022\/01\/Simon2x.jpg);\"\n                        >\n                    <\/div>\n                         <p class=\"push__teachers-name\">Simon<\/p>                          <p class=\"push__teachers-school\">4e ann\u00e9e de m\u00e9decine<\/p>                                                     <div class=\"push__teachers-note\">\n                                                                    <svg  class=\"active\" >\n                                        <use\n                                            xlink:href=\"\/content\/themes\/sherpas-theme\/dist\/images\/sprite.svg#star\"\/>\n                                    <\/svg>\n                                                                    <svg  class=\"active\" >\n                                        <use\n                                            xlink:href=\"\/content\/themes\/sherpas-theme\/dist\/images\/sprite.svg#star\"\/>\n                                    <\/svg>\n                                                                    <svg  class=\"active\" >\n                                        <use\n                                            xlink:href=\"\/content\/themes\/sherpas-theme\/dist\/images\/sprite.svg#star\"\/>\n                                    <\/svg>\n                                                                    <svg  class=\"active\" >\n                                        <use\n                                            xlink:href=\"\/content\/themes\/sherpas-theme\/dist\/images\/sprite.svg#star\"\/>\n                                    <\/svg>\n                                                                    <svg  class=\"active\" >\n                                        <use\n                                            xlink:href=\"\/content\/themes\/sherpas-theme\/dist\/images\/sprite.svg#star\"\/>\n                                    <\/svg>\n                                                            <\/div>\n                                                 <p class=\"push__teachers-price\">26\u20ac\/h<\/p>                     <\/div>\n                <\/div>\n                                            <div class=\"swiper-slide\">\n                    <div class=\"push__teachers-card\">\n                        <div\n                            class=\"push__teachers-profil\"\n                            \n                            style=\"background-image: url(https:\/\/adymrxvmro.cloudimg.io\/v7\/sherpas.com\/content\/uploads\/2022\/01\/Nicolas2x.png);\"\n                        >\n                    <\/div>\n                         <p class=\"push__teachers-name\">Nicolas<\/p>                          <p class=\"push__teachers-school\">CentraleSup\u00e9lec<\/p>                                                     <div class=\"push__teachers-note\">\n                                                                    <svg  class=\"active\" >\n                                        <use\n                                            xlink:href=\"\/content\/themes\/sherpas-theme\/dist\/images\/sprite.svg#star\"\/>\n                                    <\/svg>\n                                                                    <svg  class=\"active\" >\n                                        <use\n                                            xlink:href=\"\/content\/themes\/sherpas-theme\/dist\/images\/sprite.svg#star\"\/>\n                                    <\/svg>\n                                                                    <svg  class=\"active\" >\n                                        <use\n                                            xlink:href=\"\/content\/themes\/sherpas-theme\/dist\/images\/sprite.svg#star\"\/>\n                                    <\/svg>\n                                                                    <svg  class=\"active\" >\n                                        <use\n                                            xlink:href=\"\/content\/themes\/sherpas-theme\/dist\/images\/sprite.svg#star\"\/>\n                                    <\/svg>\n                                                                    <svg  class=\"active\" >\n                                        <use\n                                            xlink:href=\"\/content\/themes\/sherpas-theme\/dist\/images\/sprite.svg#star\"\/>\n                                    <\/svg>\n                                                            <\/div>\n                                                 <p class=\"push__teachers-price\">17\u20ac\/h<\/p>                     <\/div>\n                <\/div>\n                                            <div class=\"swiper-slide\">\n                    <div class=\"push__teachers-card\">\n                        <div\n                            class=\"push__teachers-profil\"\n                            \n                            style=\"background-image: url(https:\/\/adymrxvmro.cloudimg.io\/v7\/sherpas.com\/content\/uploads\/2022\/01\/Victor2x.jpg);\"\n                        >\n                    <\/div>\n                         <p class=\"push__teachers-name\">Victor<\/p>                          <p class=\"push__teachers-school\">ESCP<\/p>                                                     <div class=\"push__teachers-note\">\n                                                                    <svg  class=\"active\" >\n                                        <use\n                                            xlink:href=\"\/content\/themes\/sherpas-theme\/dist\/images\/sprite.svg#star\"\/>\n                                    <\/svg>\n                                                                    <svg  class=\"active\" >\n                                        <use\n                                            xlink:href=\"\/content\/themes\/sherpas-theme\/dist\/images\/sprite.svg#star\"\/>\n                                    <\/svg>\n                                                                    <svg  class=\"active\" >\n                                        <use\n                                            xlink:href=\"\/content\/themes\/sherpas-theme\/dist\/images\/sprite.svg#star\"\/>\n                                    <\/svg>\n                                                                    <svg  class=\"active\" >\n                                        <use\n                                            xlink:href=\"\/content\/themes\/sherpas-theme\/dist\/images\/sprite.svg#star\"\/>\n                                    <\/svg>\n                                                                    <svg  class=\"active\" >\n                                        <use\n                                            xlink:href=\"\/content\/themes\/sherpas-theme\/dist\/images\/sprite.svg#star\"\/>\n                                    <\/svg>\n                                                            <\/div>\n                                                 <p class=\"push__teachers-price\">25\u20ac\/h<\/p>                     <\/div>\n                <\/div>\n                    <\/div>\n    <\/div>\n<\/div>\n                                                    <div class=\"push__content\">\n                                                            <div  class=\"d-none d-md-block\" >\n                                    <img decoding=\"async\" class=\"push__logo\" src=\"\/content\/themes\/sherpas-theme\/dist\/images\/logo.svg\"\n                                        alt=\"Logo Sherpas\">\n                                <\/div>\n                                                                                        <div class=\"push__title\"><p>Besoin d&#8217;un prof particulier ? <span role=\"img\" aria-label=\"\u2728\">\u2728<\/span><!-- notionvc: 9b5ed38b-ea2e-4d3c-a3bb-f0091c2eedd2 --><\/p>\n<\/div>\n                                                                                        <div class=\"push__text\"><p>Nos profs sont l\u00e0 pour t&#8217;aider \u00e0 progresser !<\/p>\n<p>&nbsp;<\/p>\n<p><!-- notionvc: 20490bdd-6579-484b-9d99-0ff0bc1aa8e7 --><\/p>\n<\/div>\n                                                        <div class=\"push__promo-button   \">\n                                                                                                    <div\n                                        class=\"btn btn-primary\"\n                                        style=\"color: ; border-color: ; background-color: \"\n\n                                    >\n                                        JE PRENDS UN COURS GRATUIT !\n                                    <\/div>\n                                                            <\/div>\n                                                    <\/div>\n                                    <\/div>\n                                    <\/div>\n    <\/section>\n\n\n\n<h2 class=\"wp-block-heading\">Les propri\u00e9t\u00e9s des isotopes \u2728<\/h2>\n\n\n\n<p>Les isotopes poss\u00e8dent le m\u00eame cort\u00e8ge \u00e9lectronique. Par cons\u00e9quent, ils ont les m\u00eames propri\u00e9t\u00e9s chimiques.&nbsp;<\/p>\n\n\n\n<p>\ud83d\udc49 Ils forment les m\u00eames ions stables ;<\/p>\n\n\n\n<p>\ud83d\udc49 Ils forment le m\u00eame nombre de liaisons avec d\u2019autres atomes ;<\/p>\n\n\n\n<p>\ud83d\udc49 Ils ont la m\u00eame r\u00e9activit\u00e9 chimique, soit la m\u00eame capacit\u00e9 \u00e0 participer \u00e0 des r\u00e9actions chimiques.&nbsp;<\/p>\n\n\n\n<p><strong>Par contre, les isotopes n\u2019ont pas la m\u00eame masse.<\/strong> En effet, avec un nombre de nucl\u00e9ons diff\u00e9rents, ils n\u2019ont pas le m\u00eame poids. Ainsi, ils n\u2019ont pas les m\u00eames propri\u00e9t\u00e9s physiques. C&#8217;est-\u00e0-dire qu\u2019ils n\u2019ont pas la m\u00eame temp\u00e9rature de fusion ou d\u2019\u00e9bullition. \ud83d\udd25<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large\"><img decoding=\"async\" src=\"https:\/\/media.giphy.com\/media\/3o6nUWgNFU246gUEbS\/giphy.gif\" alt=\"Oui tous les isotopes n'ont pas le m\u00eame poids ! \" \/><\/figure><\/div>\n\n\n<h2 class=\"wp-block-heading\">L\u2019utilisation des isotopes dans la vie de tous les jours \ud83c\udf0d<\/h2>\n\n\n\n<p>Les isotopes ne sont pas seulement utiles en cours de physique-chimie. Ils le sont aussi dans la vie de tous les jours pour les scientifiques. Et c\u2019est tant mieux, \u00e7a montre que ce qu\u2019on t\u2019enseigne \u00e0 l\u2019\u00e9cole a de l\u2019importance. \ud83d\ude09<br><\/p>\n\n\n\n<p>Ainsi,<strong> le Carbone 14 <\/strong>pr\u00e9sent\u00e9 un peu plus haut, est un isotope qui est tr\u00e8s utilis\u00e9 pour dater les \u00e9l\u00e9ments de la vie sur Terre comme l\u2019eau, des pierres, des glaces, ou m\u00eame encore des corps humains.<strong> Il permet de dire de quand date cette roche et ainsi, donner un \u00e2ge aux \u00e9l\u00e9ments. \ud83d\ude2f<\/strong><\/p>\n\n\n\n<p>Le carbone n\u2019est pas le seul isotope \u00e0 \u00eatre pr\u00e9cieux pour les scientifiques.<strong> L\u2019iode 131 <\/strong>est aussi tr\u00e8s utilis\u00e9 pour traiter <strong>les cancers de la thyro\u00efde, les cancers du foie, les douleurs de dos ou encore le cancer des os<\/strong>. \ud83e\uddb4<\/p>\n\n\n\n<p>C\u2019est la fin de ce chapitre sur les isotopes, on esp\u00e8re que tu as pu en apprendre plus sur eux. N\u2019h\u00e9site pas \u00e0 nous dire en commentaire si cet article a pu t\u2019\u00eatre utile ! Et si tu veux en savoir plus, n&#8217;h\u00e9site pas \u00e0 <a href=\"https:\/\/sherpas.com\/cours\/physique\">prendre des cours de physique-chimie<\/a> avec l&#8217;un de nos Sherpas ! \ud83d\ude09<\/p>\n\n\n<div class=\"kk-star-ratings kksr-auto kksr-align-center kksr-valign-bottom\"\n    data-payload='{&quot;align&quot;:&quot;center&quot;,&quot;id&quot;:&quot;261487&quot;,&quot;slug&quot;:&quot;default&quot;,&quot;valign&quot;:&quot;bottom&quot;,&quot;ignore&quot;:&quot;&quot;,&quot;reference&quot;:&quot;auto&quot;,&quot;class&quot;:&quot;&quot;,&quot;count&quot;:&quot;2&quot;,&quot;legendonly&quot;:&quot;&quot;,&quot;readonly&quot;:&quot;&quot;,&quot;score&quot;:&quot;3&quot;,&quot;starsonly&quot;:&quot;&quot;,&quot;best&quot;:&quot;5&quot;,&quot;gap&quot;:&quot;5&quot;,&quot;greet&quot;:&quot;Tu as aim\u00e9 cet article ?&quot;,&quot;legend&quot;:&quot;3\\\/5 - (2 votes)&quot;,&quot;size&quot;:&quot;24&quot;,&quot;title&quot;:&quot;Isotope : d\u00e9couvre les \u00e9l\u00e9ments qui remontent le temps \u23f3&quot;,&quot;width&quot;:&quot;84.5&quot;,&quot;_legend&quot;:&quot;{score}\\\/{best} - ({count} {votes})&quot;,&quot;font_factor&quot;:&quot;1.25&quot;}'>\n            \n<div class=\"kksr-stars\">\n    \n<div class=\"kksr-stars-inactive\">\n            <div class=\"kksr-star\" data-star=\"1\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" data-star=\"2\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" data-star=\"3\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" data-star=\"4\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" data-star=\"5\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n    <\/div>\n    \n<div class=\"kksr-stars-active\" style=\"width: 84.5px;\">\n            <div class=\"kksr-star\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n    <\/div>\n<\/div>\n                \n\n<div class=\"kksr-legend\" style=\"font-size: 19.2px;\">\n            3\/5 - (2 votes)    <\/div>\n    <\/div>\n","protected":false},"excerpt":{"rendered":"<p>Lors de notre pr\u00e9c\u00e9dent article sur le tableau p\u00e9riodique des \u00e9l\u00e9ments, on t\u2019a tr\u00e8s rapidement parl\u00e9 des isotopes. (&#8230;)<\/p>\n","protected":false},"author":326,"featured_media":261488,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"category":[803,812],"tag":[79],"class_list":["post-261487","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-apprendre-matiere","category-physique-chimie-2","tag-lycee"],"acf":[],"_links":{"self":[{"href":"https:\/\/sherpas.com\/blog\/wp-json\/wp\/v2\/posts\/261487","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/sherpas.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/sherpas.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/sherpas.com\/blog\/wp-json\/wp\/v2\/users\/326"}],"replies":[{"embeddable":true,"href":"https:\/\/sherpas.com\/blog\/wp-json\/wp\/v2\/comments?post=261487"}],"version-history":[{"count":0,"href":"https:\/\/sherpas.com\/blog\/wp-json\/wp\/v2\/posts\/261487\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/sherpas.com\/blog\/wp-json\/wp\/v2\/media\/261488"}],"wp:attachment":[{"href":"https:\/\/sherpas.com\/blog\/wp-json\/wp\/v2\/media?parent=261487"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/sherpas.com\/blog\/wp-json\/wp\/v2\/category?post=261487"},{"taxonomy":"tag","embeddable":true,"href":"https:\/\/sherpas.com\/blog\/wp-json\/wp\/v2\/tag?post=261487"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}