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<span>Afficher / masquer la sous-section Histoire</span> </button> <ul id="toc-Histoire-sublist" class="vector-toc-list"> <li id="toc-Relation_à_la_masse_et_à_la_charge" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Relation_à_la_masse_et_à_la_charge"> <div class="vector-toc-text"> <span class="vector-toc-numb">1.1</span> <span>Relation à la masse et à la charge</span> </div> </a> <ul id="toc-Relation_à_la_masse_et_à_la_charge-sublist" class="vector-toc-list"> </ul> </li> </ul> </li> <li id="toc-Notes_et_références" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Notes_et_références"> <div class="vector-toc-text"> <span class="vector-toc-numb">2</span> <span>Notes et références</span> </div> </a> <button aria-controls="toc-Notes_et_références-sublist" class="cdx-button cdx-button--weight-quiet cdx-button--icon-only vector-toc-toggle"> <span class="vector-icon mw-ui-icon-wikimedia-expand"></span> <span>Afficher / masquer la sous-section Notes et références</span> </button> <ul id="toc-Notes_et_références-sublist" class="vector-toc-list"> <li id="toc-Notes" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Notes"> <div class="vector-toc-text"> <span class="vector-toc-numb">2.1</span> <span>Notes</span> </div> </a> <ul id="toc-Notes-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Références" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Références"> <div class="vector-toc-text"> <span class="vector-toc-numb">2.2</span> <span>Références</span> </div> </a> <ul id="toc-Références-sublist" class="vector-toc-list"> </ul> </li> </ul> </li> <li id="toc-Annexes" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Annexes"> <div class="vector-toc-text"> <span class="vector-toc-numb">3</span> <span>Annexes</span> </div> </a> <button aria-controls="toc-Annexes-sublist" class="cdx-button cdx-button--weight-quiet cdx-button--icon-only vector-toc-toggle"> <span class="vector-icon mw-ui-icon-wikimedia-expand"></span> <span>Afficher / masquer la sous-section Annexes</span> </button> <ul id="toc-Annexes-sublist" class="vector-toc-list"> <li id="toc-Articles_connexes" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Articles_connexes"> <div class="vector-toc-text"> <span class="vector-toc-numb">3.1</span> <span>Articles connexes</span> </div> </a> <ul id="toc-Articles_connexes-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Liens_externes" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Liens_externes"> <div class="vector-toc-text"> <span class="vector-toc-numb">3.2</span> <span>Liens externes</span> </div> </a> <ul id="toc-Liens_externes-sublist" class="vector-toc-list"> </ul> </li> </ul> </li> </ul> </div> </div> </nav> </div> </div> <div class="mw-content-container"> <main id="content" class="mw-body"> <header class="mw-body-header vector-page-titlebar"> <nav aria-label="Sommaire" class="vector-toc-landmark"> <div id="vector-page-titlebar-toc" class="vector-dropdown vector-page-titlebar-toc vector-button-flush-left" > <input type="checkbox" id="vector-page-titlebar-toc-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-vector-page-titlebar-toc" class="vector-dropdown-checkbox " aria-label="Basculer la table des matières" > <label id="vector-page-titlebar-toc-label" for="vector-page-titlebar-toc-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--icon-only " aria-hidden="true" ><span class="vector-icon mw-ui-icon-listBullet mw-ui-icon-wikimedia-listBullet"></span> <span class="vector-dropdown-label-text">Basculer la table des matières</span> </label> <div class="vector-dropdown-content"> <div id="vector-page-titlebar-toc-unpinned-container" class="vector-unpinned-container"> </div> </div> </div> </nav> <h1 id="firstHeading" class="firstHeading mw-first-heading"><span class="mw-page-title-main">Numéro atomique</span></h1> <div id="p-lang-btn" class="vector-dropdown mw-portlet mw-portlet-lang" > <input type="checkbox" id="p-lang-btn-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-p-lang-btn" class="vector-dropdown-checkbox mw-interlanguage-selector" aria-label="Aller à un article dans une autre langue. Disponible en 135 langues." > <label id="p-lang-btn-label" for="p-lang-btn-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--action-progressive mw-portlet-lang-heading-135" aria-hidden="true" ><span class="vector-icon mw-ui-icon-language-progressive mw-ui-icon-wikimedia-language-progressive"></span> <span class="vector-dropdown-label-text">135 langues</span> </label> <div class="vector-dropdown-content"> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li class="interlanguage-link interwiki-af mw-list-item"><a href="https://af.wikipedia.org/wiki/Atoomgetal" title="Atoomgetal – afrikaans" lang="af" hreflang="af" data-title="Atoomgetal" data-language-autonym="Afrikaans" data-language-local-name="afrikaans" class="interlanguage-link-target"><span>Afrikaans</span></a></li><li class="interlanguage-link interwiki-als mw-list-item"><a href="https://als.wikipedia.org/wiki/Ordnungszahl" title="Ordnungszahl – alémanique" lang="gsw" hreflang="gsw" data-title="Ordnungszahl" data-language-autonym="Alemannisch" data-language-local-name="alémanique" class="interlanguage-link-target"><span>Alemannisch</span></a></li><li class="interlanguage-link interwiki-an mw-list-item"><a href="https://an.wikipedia.org/wiki/Numero_atomico" title="Numero atomico – aragonais" lang="an" hreflang="an" data-title="Numero atomico" data-language-autonym="Aragonés" data-language-local-name="aragonais" class="interlanguage-link-target"><span>Aragonés</span></a></li><li class="interlanguage-link interwiki-anp mw-list-item"><a href="https://anp.wikipedia.org/wiki/%E0%A4%AA%E0%A4%B0%E0%A4%AE%E0%A4%BE%E0%A4%A3%E0%A5%81_%E0%A4%B8%E0%A4%82%E0%A4%96%E0%A5%8D%E0%A4%AF%E0%A4%BE" title="परमाणु संख्या – angika" lang="anp" hreflang="anp" data-title="परमाणु संख्या" data-language-autonym="अंगिका" data-language-local-name="angika" class="interlanguage-link-target"><span>अंगिका</span></a></li><li class="interlanguage-link interwiki-ar mw-list-item"><a href="https://ar.wikipedia.org/wiki/%D8%B9%D8%AF%D8%AF_%D8%B0%D8%B1%D9%8A" title="عدد ذري – arabe" lang="ar" hreflang="ar" data-title="عدد ذري" data-language-autonym="العربية" data-language-local-name="arabe" class="interlanguage-link-target"><span>العربية</span></a></li><li class="interlanguage-link interwiki-ary mw-list-item"><a href="https://ary.wikipedia.org/wiki/%D9%86%D9%85%D8%B1%D8%A9_%D8%AF%D8%B1%D9%8A%D8%A9" title="نمرة درية – arabe marocain" lang="ary" hreflang="ary" data-title="نمرة درية" data-language-autonym="الدارجة" data-language-local-name="arabe marocain" class="interlanguage-link-target"><span>الدارجة</span></a></li><li class="interlanguage-link interwiki-ast mw-list-item"><a href="https://ast.wikipedia.org/wiki/N%C3%BAmberu_at%C3%B3micu" title="Númberu atómicu – asturien" lang="ast" hreflang="ast" data-title="Númberu atómicu" data-language-autonym="Asturianu" data-language-local-name="asturien" class="interlanguage-link-target"><span>Asturianu</span></a></li><li class="interlanguage-link interwiki-azb mw-list-item"><a href="https://azb.wikipedia.org/wiki/%D8%A2%D8%AA%D9%88%D9%85_%D8%B3%D8%A7%DB%8C%DB%8C%E2%80%8C%D8%B3%DB%8C" title="آتوم سایی‌سی – South Azerbaijani" lang="azb" hreflang="azb" data-title="آتوم سایی‌سی" data-language-autonym="تۆرکجه" data-language-local-name="South Azerbaijani" class="interlanguage-link-target"><span>تۆرکجه</span></a></li><li class="interlanguage-link interwiki-ban mw-list-item"><a href="https://ban.wikipedia.org/wiki/Wilangan_atom" title="Wilangan atom – balinais" lang="ban" hreflang="ban" data-title="Wilangan atom" data-language-autonym="Basa Bali" data-language-local-name="balinais" class="interlanguage-link-target"><span>Basa Bali</span></a></li><li class="interlanguage-link interwiki-bar mw-list-item"><a href="https://bar.wikipedia.org/wiki/Ordnungszoi" title="Ordnungszoi – bavarois" lang="bar" hreflang="bar" data-title="Ordnungszoi" data-language-autonym="Boarisch" data-language-local-name="bavarois" class="interlanguage-link-target"><span>Boarisch</span></a></li><li class="interlanguage-link interwiki-be mw-list-item"><a href="https://be.wikipedia.org/wiki/%D0%97%D0%B0%D1%80%D0%B0%D0%B4%D0%B0%D0%B2%D1%8B_%D0%BB%D1%96%D0%BA" title="Зарадавы лік – biélorusse" lang="be" hreflang="be" data-title="Зарадавы лік" data-language-autonym="Беларуская" data-language-local-name="biélorusse" class="interlanguage-link-target"><span>Беларуская</span></a></li><li class="interlanguage-link interwiki-bg mw-list-item"><a href="https://bg.wikipedia.org/wiki/%D0%90%D1%82%D0%BE%D0%BC%D0%B5%D0%BD_%D0%BD%D0%BE%D0%BC%D0%B5%D1%80" title="Атомен номер – bulgare" lang="bg" hreflang="bg" data-title="Атомен номер" data-language-autonym="Български" data-language-local-name="bulgare" class="interlanguage-link-target"><span>Български</span></a></li><li class="interlanguage-link interwiki-bn mw-list-item"><a href="https://bn.wikipedia.org/wiki/%E0%A6%AA%E0%A6%BE%E0%A6%B0%E0%A6%AE%E0%A6%BE%E0%A6%A3%E0%A6%AC%E0%A6%BF%E0%A6%95_%E0%A6%B8%E0%A6%82%E0%A6%96%E0%A7%8D%E0%A6%AF%E0%A6%BE" title="পারমাণবিক সংখ্যা – bengali" lang="bn" hreflang="bn" data-title="পারমাণবিক সংখ্যা" data-language-autonym="বাংলা" data-language-local-name="bengali" class="interlanguage-link-target"><span>বাংলা</span></a></li><li class="interlanguage-link interwiki-br mw-list-item"><a href="https://br.wikipedia.org/wiki/Niver_atomek" title="Niver atomek – breton" lang="br" hreflang="br" data-title="Niver atomek" data-language-autonym="Brezhoneg" data-language-local-name="breton" class="interlanguage-link-target"><span>Brezhoneg</span></a></li><li class="interlanguage-link interwiki-bs mw-list-item"><a href="https://bs.wikipedia.org/wiki/Atomski_broj" title="Atomski broj – bosniaque" lang="bs" hreflang="bs" data-title="Atomski broj" data-language-autonym="Bosanski" data-language-local-name="bosniaque" class="interlanguage-link-target"><span>Bosanski</span></a></li><li class="interlanguage-link interwiki-ca mw-list-item"><a href="https://ca.wikipedia.org/wiki/Nombre_at%C3%B2mic" title="Nombre atòmic – catalan" lang="ca" hreflang="ca" data-title="Nombre atòmic" data-language-autonym="Català" data-language-local-name="catalan" class="interlanguage-link-target"><span>Català</span></a></li><li class="interlanguage-link interwiki-ce mw-list-item"><a href="https://ce.wikipedia.org/wiki/%D0%94%D1%83%D0%BB%D0%B0%D0%B4%D0%B0%D0%BB%D0%B0%D1%80%D0%B0%D0%BD_%D1%82%D0%B5%D1%80%D0%B0%D1%85%D1%8C" title="Дуладаларан терахь – tchétchène" lang="ce" hreflang="ce" data-title="Дуладаларан терахь" data-language-autonym="Нохчийн" data-language-local-name="tchétchène" class="interlanguage-link-target"><span>Нохчийн</span></a></li><li class="interlanguage-link interwiki-ckb mw-list-item"><a href="https://ckb.wikipedia.org/wiki/%DA%AF%DB%95%D8%B1%D8%AF%DB%8C%D9%84%DB%95_%DA%98%D9%85%D8%A7%D8%B1%DB%95" title="گەردیلە ژمارە – sorani" lang="ckb" hreflang="ckb" data-title="گەردیلە ژمارە" data-language-autonym="کوردی" data-language-local-name="sorani" class="interlanguage-link-target"><span>کوردی</span></a></li><li class="interlanguage-link interwiki-cs mw-list-item"><a href="https://cs.wikipedia.org/wiki/Protonov%C3%A9_%C4%8D%C3%ADslo" title="Protonové číslo – tchèque" lang="cs" hreflang="cs" data-title="Protonové číslo" data-language-autonym="Čeština" data-language-local-name="tchèque" class="interlanguage-link-target"><span>Čeština</span></a></li><li class="interlanguage-link interwiki-cv mw-list-item"><a href="https://cv.wikipedia.org/wiki/%D0%90%D1%82%D0%BE%D0%BC%C4%83%D0%BD_%D0%BD%D0%BE%D0%BC%D0%B5%D1%80%C4%95" title="Атомăн номерĕ – tchouvache" lang="cv" hreflang="cv" data-title="Атомăн номерĕ" data-language-autonym="Чӑвашла" data-language-local-name="tchouvache" class="interlanguage-link-target"><span>Чӑвашла</span></a></li><li class="interlanguage-link interwiki-cy mw-list-item"><a href="https://cy.wikipedia.org/wiki/Rhif_atomig" title="Rhif atomig – gallois" lang="cy" hreflang="cy" data-title="Rhif atomig" data-language-autonym="Cymraeg" data-language-local-name="gallois" class="interlanguage-link-target"><span>Cymraeg</span></a></li><li class="interlanguage-link interwiki-da mw-list-item"><a href="https://da.wikipedia.org/wiki/Atomnummer" title="Atomnummer – danois" lang="da" hreflang="da" data-title="Atomnummer" data-language-autonym="Dansk" data-language-local-name="danois" class="interlanguage-link-target"><span>Dansk</span></a></li><li class="interlanguage-link interwiki-de mw-list-item"><a href="https://de.wikipedia.org/wiki/Ordnungszahl" title="Ordnungszahl – allemand" lang="de" hreflang="de" data-title="Ordnungszahl" data-language-autonym="Deutsch" data-language-local-name="allemand" class="interlanguage-link-target"><span>Deutsch</span></a></li><li class="interlanguage-link interwiki-el mw-list-item"><a href="https://el.wikipedia.org/wiki/%CE%91%CF%84%CE%BF%CE%BC%CE%B9%CE%BA%CF%8C%CF%82_%CE%B1%CF%81%CE%B9%CE%B8%CE%BC%CF%8C%CF%82" title="Ατομικός αριθμός – grec" lang="el" hreflang="el" data-title="Ατομικός αριθμός" data-language-autonym="Ελληνικά" data-language-local-name="grec" class="interlanguage-link-target"><span>Ελληνικά</span></a></li><li class="interlanguage-link interwiki-en mw-list-item"><a href="https://en.wikipedia.org/wiki/Atomic_number" title="Atomic number – anglais" lang="en" hreflang="en" data-title="Atomic number" data-language-autonym="English" data-language-local-name="anglais" class="interlanguage-link-target"><span>English</span></a></li><li class="interlanguage-link interwiki-eo mw-list-item"><a href="https://eo.wikipedia.org/wiki/Atomnumero" title="Atomnumero – espéranto" lang="eo" hreflang="eo" data-title="Atomnumero" data-language-autonym="Esperanto" data-language-local-name="espéranto" class="interlanguage-link-target"><span>Esperanto</span></a></li><li class="interlanguage-link interwiki-es mw-list-item"><a href="https://es.wikipedia.org/wiki/N%C3%BAmero_at%C3%B3mico" title="Número atómico – espagnol" lang="es" hreflang="es" data-title="Número atómico" data-language-autonym="Español" data-language-local-name="espagnol" class="interlanguage-link-target"><span>Español</span></a></li><li class="interlanguage-link interwiki-et mw-list-item"><a href="https://et.wikipedia.org/wiki/Aatomnumber" title="Aatomnumber – estonien" lang="et" hreflang="et" data-title="Aatomnumber" data-language-autonym="Eesti" data-language-local-name="estonien" class="interlanguage-link-target"><span>Eesti</span></a></li><li class="interlanguage-link interwiki-eu mw-list-item"><a href="https://eu.wikipedia.org/wiki/Atomo-zenbaki" title="Atomo-zenbaki – basque" lang="eu" hreflang="eu" data-title="Atomo-zenbaki" data-language-autonym="Euskara" data-language-local-name="basque" class="interlanguage-link-target"><span>Euskara</span></a></li><li class="interlanguage-link interwiki-fa mw-list-item"><a href="https://fa.wikipedia.org/wiki/%D8%B9%D8%AF%D8%AF_%D8%A7%D8%AA%D9%85%DB%8C" title="عدد اتمی – persan" lang="fa" hreflang="fa" data-title="عدد اتمی" data-language-autonym="فارسی" data-language-local-name="persan" class="interlanguage-link-target"><span>فارسی</span></a></li><li class="interlanguage-link interwiki-fi mw-list-item"><a href="https://fi.wikipedia.org/wiki/J%C3%A4rjestysluku_(kemia)" title="Järjestysluku (kemia) – finnois" lang="fi" hreflang="fi" data-title="Järjestysluku (kemia)" data-language-autonym="Suomi" data-language-local-name="finnois" class="interlanguage-link-target"><span>Suomi</span></a></li><li class="interlanguage-link interwiki-fiu-vro mw-list-item"><a href="https://fiu-vro.wikipedia.org/wiki/Aadomarv" title="Aadomarv – võro" lang="vro" hreflang="vro" data-title="Aadomarv" data-language-autonym="Võro" data-language-local-name="võro" class="interlanguage-link-target"><span>Võro</span></a></li><li class="interlanguage-link interwiki-frr mw-list-item"><a href="https://frr.wikipedia.org/wiki/Atoomnumer" title="Atoomnumer – frison septentrional" lang="frr" hreflang="frr" data-title="Atoomnumer" data-language-autonym="Nordfriisk" data-language-local-name="frison septentrional" class="interlanguage-link-target"><span>Nordfriisk</span></a></li><li class="interlanguage-link interwiki-fur mw-list-item"><a href="https://fur.wikipedia.org/wiki/Numar_atomic" title="Numar atomic – frioulan" lang="fur" hreflang="fur" data-title="Numar atomic" data-language-autonym="Furlan" data-language-local-name="frioulan" class="interlanguage-link-target"><span>Furlan</span></a></li><li class="interlanguage-link interwiki-fy mw-list-item"><a href="https://fy.wikipedia.org/wiki/Atoomn%C3%BBmer" title="Atoomnûmer – frison occidental" lang="fy" hreflang="fy" data-title="Atoomnûmer" data-language-autonym="Frysk" data-language-local-name="frison occidental" class="interlanguage-link-target"><span>Frysk</span></a></li><li class="interlanguage-link interwiki-ga mw-list-item"><a href="https://ga.wikipedia.org/wiki/Uimhir_adamhach" title="Uimhir adamhach – irlandais" lang="ga" hreflang="ga" data-title="Uimhir adamhach" data-language-autonym="Gaeilge" data-language-local-name="irlandais" class="interlanguage-link-target"><span>Gaeilge</span></a></li><li class="interlanguage-link interwiki-gan mw-list-item"><a href="https://gan.wikipedia.org/wiki/%E5%8E%9F%E5%AD%90%E5%BA%8F%E6%95%B8" title="原子序數 – gan" lang="gan" hreflang="gan" data-title="原子序數" data-language-autonym="贛語" data-language-local-name="gan" class="interlanguage-link-target"><span>贛語</span></a></li><li class="interlanguage-link interwiki-gl mw-list-item"><a href="https://gl.wikipedia.org/wiki/N%C3%BAmero_at%C3%B3mico" title="Número atómico – galicien" lang="gl" hreflang="gl" data-title="Número atómico" data-language-autonym="Galego" data-language-local-name="galicien" class="interlanguage-link-target"><span>Galego</span></a></li><li class="interlanguage-link interwiki-gu mw-list-item"><a href="https://gu.wikipedia.org/wiki/%E0%AA%AA%E0%AA%B0%E0%AA%AE%E0%AA%BE%E0%AA%A3%E0%AB%81_%E0%AA%95%E0%AB%8D%E0%AA%B0%E0%AA%AE%E0%AA%BE%E0%AA%82%E0%AA%95" title="પરમાણુ ક્રમાંક – goudjarati" lang="gu" hreflang="gu" data-title="પરમાણુ ક્રમાંક" data-language-autonym="ગુજરાતી" data-language-local-name="goudjarati" class="interlanguage-link-target"><span>ગુજરાતી</span></a></li><li class="interlanguage-link interwiki-gv mw-list-item"><a href="https://gv.wikipedia.org/wiki/Earroo_breneenagh" title="Earroo breneenagh – mannois" lang="gv" hreflang="gv" data-title="Earroo breneenagh" data-language-autonym="Gaelg" data-language-local-name="mannois" class="interlanguage-link-target"><span>Gaelg</span></a></li><li class="interlanguage-link interwiki-he mw-list-item"><a href="https://he.wikipedia.org/wiki/%D7%9E%D7%A1%D7%A4%D7%A8_%D7%90%D7%98%D7%95%D7%9E%D7%99" title="מספר אטומי – hébreu" lang="he" hreflang="he" data-title="מספר אטומי" data-language-autonym="עברית" data-language-local-name="hébreu" class="interlanguage-link-target"><span>עברית</span></a></li><li class="interlanguage-link interwiki-hi mw-list-item"><a href="https://hi.wikipedia.org/wiki/%E0%A4%AA%E0%A4%B0%E0%A4%AE%E0%A4%BE%E0%A4%A3%E0%A5%81_%E0%A4%95%E0%A5%8D%E0%A4%B0%E0%A4%AE%E0%A4%BE%E0%A4%82%E0%A4%95" title="परमाणु क्रमांक – hindi" lang="hi" hreflang="hi" data-title="परमाणु क्रमांक" data-language-autonym="हिन्दी" data-language-local-name="hindi" class="interlanguage-link-target"><span>हिन्दी</span></a></li><li class="interlanguage-link interwiki-hif mw-list-item"><a href="https://hif.wikipedia.org/wiki/Atomic_number" title="Atomic number – hindi fidjien" lang="hif" hreflang="hif" data-title="Atomic number" data-language-autonym="Fiji Hindi" data-language-local-name="hindi fidjien" class="interlanguage-link-target"><span>Fiji Hindi</span></a></li><li class="interlanguage-link interwiki-hr mw-list-item"><a href="https://hr.wikipedia.org/wiki/Atomski_broj" title="Atomski broj – croate" lang="hr" hreflang="hr" data-title="Atomski broj" data-language-autonym="Hrvatski" data-language-local-name="croate" class="interlanguage-link-target"><span>Hrvatski</span></a></li><li class="interlanguage-link interwiki-ht mw-list-item"><a href="https://ht.wikipedia.org/wiki/Nonm_atomik" title="Nonm atomik – créole haïtien" lang="ht" hreflang="ht" data-title="Nonm atomik" data-language-autonym="Kreyòl ayisyen" data-language-local-name="créole haïtien" class="interlanguage-link-target"><span>Kreyòl ayisyen</span></a></li><li class="interlanguage-link interwiki-hu mw-list-item"><a href="https://hu.wikipedia.org/wiki/Rendsz%C3%A1m_(k%C3%A9mia)" title="Rendszám (kémia) – hongrois" lang="hu" hreflang="hu" data-title="Rendszám (kémia)" data-language-autonym="Magyar" data-language-local-name="hongrois" class="interlanguage-link-target"><span>Magyar</span></a></li><li class="interlanguage-link interwiki-hy mw-list-item"><a href="https://hy.wikipedia.org/wiki/%D4%B1%D5%BF%D5%B8%D5%B4%D5%A1%D5%AF%D5%A1%D5%B6_%D5%B0%D5%A1%D5%B4%D5%A1%D6%80" title="Ատոմական համար – arménien" lang="hy" hreflang="hy" data-title="Ատոմական համար" data-language-autonym="Հայերեն" data-language-local-name="arménien" class="interlanguage-link-target"><span>Հայերեն</span></a></li><li class="interlanguage-link interwiki-ia mw-list-item"><a href="https://ia.wikipedia.org/wiki/Numero_atomic" title="Numero atomic – interlingua" lang="ia" hreflang="ia" data-title="Numero atomic" data-language-autonym="Interlingua" data-language-local-name="interlingua" class="interlanguage-link-target"><span>Interlingua</span></a></li><li class="interlanguage-link interwiki-id mw-list-item"><a href="https://id.wikipedia.org/wiki/Nomor_atom" title="Nomor atom – indonésien" lang="id" hreflang="id" data-title="Nomor atom" data-language-autonym="Bahasa Indonesia" data-language-local-name="indonésien" class="interlanguage-link-target"><span>Bahasa Indonesia</span></a></li><li class="interlanguage-link interwiki-ilo mw-list-item"><a href="https://ilo.wikipedia.org/wiki/Atomiko_a_numero" title="Atomiko a numero – ilocano" lang="ilo" hreflang="ilo" data-title="Atomiko a numero" data-language-autonym="Ilokano" data-language-local-name="ilocano" class="interlanguage-link-target"><span>Ilokano</span></a></li><li class="interlanguage-link interwiki-inh mw-list-item"><a href="https://inh.wikipedia.org/wiki/%D0%97%D0%B8%D1%80%D1%85%D0%B0%D1%82%D0%B0_%D0%BD%D0%BE%D0%BC%D0%B5%D1%80" title="Зирхата номер – ingouche" lang="inh" hreflang="inh" data-title="Зирхата номер" data-language-autonym="ГӀалгӀай" data-language-local-name="ingouche" class="interlanguage-link-target"><span>ГӀалгӀай</span></a></li><li class="interlanguage-link interwiki-io mw-list-item"><a href="https://io.wikipedia.org/wiki/Atomala_nombro" title="Atomala nombro – ido" lang="io" hreflang="io" data-title="Atomala nombro" data-language-autonym="Ido" data-language-local-name="ido" class="interlanguage-link-target"><span>Ido</span></a></li><li class="interlanguage-link interwiki-is mw-list-item"><a href="https://is.wikipedia.org/wiki/S%C3%A6tistala" title="Sætistala – islandais" lang="is" hreflang="is" data-title="Sætistala" data-language-autonym="Íslenska" data-language-local-name="islandais" class="interlanguage-link-target"><span>Íslenska</span></a></li><li class="interlanguage-link interwiki-it mw-list-item"><a href="https://it.wikipedia.org/wiki/Numero_atomico" title="Numero atomico – italien" lang="it" hreflang="it" data-title="Numero atomico" data-language-autonym="Italiano" data-language-local-name="italien" class="interlanguage-link-target"><span>Italiano</span></a></li><li class="interlanguage-link interwiki-ja mw-list-item"><a href="https://ja.wikipedia.org/wiki/%E5%8E%9F%E5%AD%90%E7%95%AA%E5%8F%B7" title="原子番号 – japonais" lang="ja" hreflang="ja" data-title="原子番号" data-language-autonym="日本語" data-language-local-name="japonais" class="interlanguage-link-target"><span>日本語</span></a></li><li class="interlanguage-link interwiki-jv mw-list-item"><a href="https://jv.wikipedia.org/wiki/Nomer_atom" title="Nomer atom – javanais" lang="jv" hreflang="jv" data-title="Nomer atom" data-language-autonym="Jawa" data-language-local-name="javanais" class="interlanguage-link-target"><span>Jawa</span></a></li><li class="interlanguage-link interwiki-ka mw-list-item"><a href="https://ka.wikipedia.org/wiki/%E1%83%90%E1%83%A2%E1%83%9D%E1%83%9B%E1%83%A3%E1%83%A0%E1%83%98_%E1%83%9C%E1%83%9D%E1%83%9B%E1%83%94%E1%83%A0%E1%83%98" title="ატომური ნომერი – géorgien" lang="ka" hreflang="ka" data-title="ატომური ნომერი" data-language-autonym="ქართული" data-language-local-name="géorgien" class="interlanguage-link-target"><span>ქართული</span></a></li><li class="interlanguage-link interwiki-kab mw-list-item"><a href="https://kab.wikipedia.org/wiki/U%E1%B9%AD%E1%B9%ADun_abelkim" title="Uṭṭun abelkim – kabyle" lang="kab" hreflang="kab" data-title="Uṭṭun abelkim" data-language-autonym="Taqbaylit" data-language-local-name="kabyle" class="interlanguage-link-target"><span>Taqbaylit</span></a></li><li class="interlanguage-link interwiki-kk mw-list-item"><a href="https://kk.wikipedia.org/wiki/%D0%90%D1%82%D0%BE%D0%BC%D0%B4%D1%8B%D2%9B_%D0%BD%D3%A9%D0%BC%D1%96%D1%80" title="Атомдық нөмір – kazakh" lang="kk" hreflang="kk" data-title="Атомдық нөмір" data-language-autonym="Қазақша" data-language-local-name="kazakh" class="interlanguage-link-target"><span>Қазақша</span></a></li><li class="interlanguage-link interwiki-kn mw-list-item"><a href="https://kn.wikipedia.org/wiki/%E0%B2%AA%E0%B2%B0%E0%B2%AE%E0%B2%BE%E0%B2%A3%E0%B3%81_%E0%B2%B8%E0%B2%82%E0%B2%96%E0%B3%8D%E0%B2%AF%E0%B3%86" title="ಪರಮಾಣು ಸಂಖ್ಯೆ – kannada" lang="kn" hreflang="kn" data-title="ಪರಮಾಣು ಸಂಖ್ಯೆ" data-language-autonym="ಕನ್ನಡ" data-language-local-name="kannada" class="interlanguage-link-target"><span>ಕನ್ನಡ</span></a></li><li class="interlanguage-link interwiki-ko mw-list-item"><a href="https://ko.wikipedia.org/wiki/%EC%9B%90%EC%9E%90_%EB%B2%88%ED%98%B8" title="원자 번호 – coréen" lang="ko" hreflang="ko" data-title="원자 번호" data-language-autonym="한국어" data-language-local-name="coréen" class="interlanguage-link-target"><span>한국어</span></a></li><li class="interlanguage-link interwiki-ku mw-list-item"><a href="https://ku.wikipedia.org/wiki/Hejmara_atom%C3%AE" title="Hejmara atomî – kurde" lang="ku" hreflang="ku" data-title="Hejmara atomî" data-language-autonym="Kurdî" data-language-local-name="kurde" class="interlanguage-link-target"><span>Kurdî</span></a></li><li class="interlanguage-link interwiki-kw mw-list-item"><a href="https://kw.wikipedia.org/wiki/Niver_atomek" title="Niver atomek – cornique" lang="kw" hreflang="kw" data-title="Niver atomek" data-language-autonym="Kernowek" data-language-local-name="cornique" class="interlanguage-link-target"><span>Kernowek</span></a></li><li class="interlanguage-link interwiki-ky mw-list-item"><a href="https://ky.wikipedia.org/wiki/%D0%90%D1%82%D0%BE%D0%BC%D0%B4%D1%83%D0%BA_%D0%BD%D0%BE%D0%BC%D0%B5%D1%80" title="Атомдук номер – kirghize" lang="ky" hreflang="ky" data-title="Атомдук номер" data-language-autonym="Кыргызча" data-language-local-name="kirghize" class="interlanguage-link-target"><span>Кыргызча</span></a></li><li class="interlanguage-link interwiki-la mw-list-item"><a href="https://la.wikipedia.org/wiki/Numerus_atomicus" title="Numerus atomicus – latin" lang="la" hreflang="la" data-title="Numerus atomicus" data-language-autonym="Latina" data-language-local-name="latin" class="interlanguage-link-target"><span>Latina</span></a></li><li class="interlanguage-link interwiki-lb mw-list-item"><a href="https://lb.wikipedia.org/wiki/Uerdnungszuel" title="Uerdnungszuel – luxembourgeois" lang="lb" hreflang="lb" data-title="Uerdnungszuel" data-language-autonym="Lëtzebuergesch" data-language-local-name="luxembourgeois" class="interlanguage-link-target"><span>Lëtzebuergesch</span></a></li><li class="interlanguage-link interwiki-li mw-list-item"><a href="https://li.wikipedia.org/wiki/Atoomn%C3%B3mmer" title="Atoomnómmer – limbourgeois" lang="li" hreflang="li" data-title="Atoomnómmer" data-language-autonym="Limburgs" data-language-local-name="limbourgeois" class="interlanguage-link-target"><span>Limburgs</span></a></li><li class="interlanguage-link interwiki-lij mw-list-item"><a href="https://lij.wikipedia.org/wiki/Nummero_atommico" title="Nummero atommico – ligure" lang="lij" hreflang="lij" data-title="Nummero atommico" data-language-autonym="Ligure" data-language-local-name="ligure" class="interlanguage-link-target"><span>Ligure</span></a></li><li class="interlanguage-link interwiki-lmo mw-list-item"><a href="https://lmo.wikipedia.org/wiki/N%C3%BCmer_atomich" title="Nümer atomich – lombard" lang="lmo" hreflang="lmo" data-title="Nümer atomich" data-language-autonym="Lombard" data-language-local-name="lombard" class="interlanguage-link-target"><span>Lombard</span></a></li><li class="interlanguage-link interwiki-lt mw-list-item"><a href="https://lt.wikipedia.org/wiki/Atomo_numeris" title="Atomo numeris – lituanien" lang="lt" hreflang="lt" data-title="Atomo numeris" data-language-autonym="Lietuvių" data-language-local-name="lituanien" class="interlanguage-link-target"><span>Lietuvių</span></a></li><li class="interlanguage-link interwiki-lv mw-list-item"><a href="https://lv.wikipedia.org/wiki/Atomskaitlis" title="Atomskaitlis – letton" lang="lv" hreflang="lv" data-title="Atomskaitlis" data-language-autonym="Latviešu" data-language-local-name="letton" class="interlanguage-link-target"><span>Latviešu</span></a></li><li class="interlanguage-link interwiki-mk mw-list-item"><a href="https://mk.wikipedia.org/wiki/%D0%90%D1%82%D0%BE%D0%BC%D1%81%D0%BA%D0%B8_%D0%B1%D1%80%D0%BE%D1%98" title="Атомски број – macédonien" lang="mk" hreflang="mk" data-title="Атомски број" data-language-autonym="Македонски" data-language-local-name="macédonien" class="interlanguage-link-target"><span>Македонски</span></a></li><li class="interlanguage-link interwiki-ml mw-list-item"><a href="https://ml.wikipedia.org/wiki/%E0%B4%85%E0%B4%A3%E0%B5%81%E0%B4%B8%E0%B4%82%E0%B4%96%E0%B5%8D%E0%B4%AF" title="അണുസംഖ്യ – malayalam" lang="ml" hreflang="ml" data-title="അണുസംഖ്യ" data-language-autonym="മലയാളം" data-language-local-name="malayalam" class="interlanguage-link-target"><span>മലയാളം</span></a></li><li class="interlanguage-link interwiki-mn mw-list-item"><a href="https://mn.wikipedia.org/wiki/%D0%90%D1%82%D0%BE%D0%BC%D1%8B%D0%BD_%D0%B4%D1%83%D0%B3%D0%B0%D0%B0%D1%80" title="Атомын дугаар – mongol" lang="mn" hreflang="mn" data-title="Атомын дугаар" data-language-autonym="Монгол" data-language-local-name="mongol" class="interlanguage-link-target"><span>Монгол</span></a></li><li class="interlanguage-link interwiki-mr mw-list-item"><a href="https://mr.wikipedia.org/wiki/%E0%A4%85%E0%A4%A3%E0%A5%81%E0%A4%95%E0%A5%8D%E0%A4%B0%E0%A4%AE%E0%A4%BE%E0%A4%82%E0%A4%95" title="अणुक्रमांक – marathi" lang="mr" hreflang="mr" data-title="अणुक्रमांक" data-language-autonym="मराठी" data-language-local-name="marathi" class="interlanguage-link-target"><span>मराठी</span></a></li><li class="interlanguage-link interwiki-ms mw-list-item"><a href="https://ms.wikipedia.org/wiki/Nombor_atom" title="Nombor atom – malais" lang="ms" hreflang="ms" data-title="Nombor atom" data-language-autonym="Bahasa Melayu" data-language-local-name="malais" class="interlanguage-link-target"><span>Bahasa Melayu</span></a></li><li class="interlanguage-link interwiki-my mw-list-item"><a href="https://my.wikipedia.org/wiki/%E1%80%A1%E1%80%80%E1%80%BA%E1%80%90%E1%80%99%E1%80%BA_%E1%80%A1%E1%80%99%E1%80%BE%E1%80%90%E1%80%BA%E1%80%85%E1%80%89%E1%80%BA" title="အက်တမ် အမှတ်စဉ် – birman" lang="my" hreflang="my" data-title="အက်တမ် အမှတ်စဉ်" data-language-autonym="မြန်မာဘာသာ" data-language-local-name="birman" class="interlanguage-link-target"><span>မြန်မာဘာသာ</span></a></li><li class="interlanguage-link interwiki-nds mw-list-item"><a href="https://nds.wikipedia.org/wiki/Atomtall" title="Atomtall – bas-allemand" lang="nds" hreflang="nds" data-title="Atomtall" data-language-autonym="Plattdüütsch" data-language-local-name="bas-allemand" class="interlanguage-link-target"><span>Plattdüütsch</span></a></li><li class="interlanguage-link interwiki-ne mw-list-item"><a href="https://ne.wikipedia.org/wiki/%E0%A4%AA%E0%A4%B0%E0%A4%AE%E0%A4%BE%E0%A4%A3%E0%A5%81_%E0%A4%95%E0%A5%8D%E0%A4%B0%E0%A4%AE%E0%A4%BE%E0%A4%99%E0%A5%8D%E0%A4%95" title="परमाणु क्रमाङ्क – népalais" lang="ne" hreflang="ne" data-title="परमाणु क्रमाङ्क" data-language-autonym="नेपाली" data-language-local-name="népalais" class="interlanguage-link-target"><span>नेपाली</span></a></li><li class="interlanguage-link interwiki-nl mw-list-item"><a href="https://nl.wikipedia.org/wiki/Atoomnummer" title="Atoomnummer – néerlandais" lang="nl" hreflang="nl" data-title="Atoomnummer" data-language-autonym="Nederlands" data-language-local-name="néerlandais" class="interlanguage-link-target"><span>Nederlands</span></a></li><li class="interlanguage-link interwiki-nn mw-list-item"><a href="https://nn.wikipedia.org/wiki/Atomnummer" title="Atomnummer – norvégien nynorsk" lang="nn" hreflang="nn" data-title="Atomnummer" data-language-autonym="Norsk nynorsk" data-language-local-name="norvégien nynorsk" class="interlanguage-link-target"><span>Norsk nynorsk</span></a></li><li class="interlanguage-link interwiki-no mw-list-item"><a href="https://no.wikipedia.org/wiki/Atomnummer" title="Atomnummer – norvégien bokmål" lang="nb" hreflang="nb" data-title="Atomnummer" data-language-autonym="Norsk bokmål" data-language-local-name="norvégien bokmål" class="interlanguage-link-target"><span>Norsk bokmål</span></a></li><li class="interlanguage-link interwiki-oc mw-list-item"><a href="https://oc.wikipedia.org/wiki/Num%C3%A8ro_atomic" title="Numèro atomic – occitan" lang="oc" hreflang="oc" data-title="Numèro atomic" data-language-autonym="Occitan" data-language-local-name="occitan" class="interlanguage-link-target"><span>Occitan</span></a></li><li class="interlanguage-link interwiki-om mw-list-item"><a href="https://om.wikipedia.org/wiki/Lakkoofsa_Atoomaawaa" title="Lakkoofsa Atoomaawaa – oromo" lang="om" hreflang="om" data-title="Lakkoofsa Atoomaawaa" data-language-autonym="Oromoo" data-language-local-name="oromo" class="interlanguage-link-target"><span>Oromoo</span></a></li><li class="interlanguage-link interwiki-or mw-list-item"><a href="https://or.wikipedia.org/wiki/%E0%AC%AA%E0%AC%B0%E0%AC%AE%E0%AC%BE%E0%AC%A3%E0%AD%81_%E0%AC%95%E0%AD%8D%E0%AC%B0%E0%AC%AE%E0%AC%BE%E0%AC%99%E0%AD%8D%E0%AC%95" title="ପରମାଣୁ କ୍ରମାଙ୍କ – odia" lang="or" hreflang="or" data-title="ପରମାଣୁ କ୍ରମାଙ୍କ" data-language-autonym="ଓଡ଼ିଆ" data-language-local-name="odia" class="interlanguage-link-target"><span>ଓଡ଼ିଆ</span></a></li><li class="interlanguage-link interwiki-pa mw-list-item"><a href="https://pa.wikipedia.org/wiki/%E0%A8%AA%E0%A8%B0%E0%A8%AE%E0%A8%BE%E0%A8%A3%E0%A9%82_%E0%A8%B8%E0%A9%B0%E0%A8%96%E0%A8%BF%E0%A8%86" title="ਪਰਮਾਣੂ ਸੰਖਿਆ – pendjabi" lang="pa" hreflang="pa" data-title="ਪਰਮਾਣੂ ਸੰਖਿਆ" data-language-autonym="ਪੰਜਾਬੀ" data-language-local-name="pendjabi" class="interlanguage-link-target"><span>ਪੰਜਾਬੀ</span></a></li><li class="interlanguage-link interwiki-pl mw-list-item"><a href="https://pl.wikipedia.org/wiki/Liczba_atomowa" title="Liczba atomowa – polonais" lang="pl" hreflang="pl" data-title="Liczba atomowa" data-language-autonym="Polski" data-language-local-name="polonais" class="interlanguage-link-target"><span>Polski</span></a></li><li class="interlanguage-link interwiki-pnb mw-list-item"><a href="https://pnb.wikipedia.org/wiki/%D8%A7%DB%8C%D9%B9%D9%85%DB%8C_%D9%86%D9%85%D8%A8%D8%B1" title="ایٹمی نمبر – Western Punjabi" lang="pnb" hreflang="pnb" data-title="ایٹمی نمبر" data-language-autonym="پنجابی" data-language-local-name="Western Punjabi" class="interlanguage-link-target"><span>پنجابی</span></a></li><li class="interlanguage-link interwiki-ps mw-list-item"><a href="https://ps.wikipedia.org/wiki/%D8%A7%D9%BC%D9%88%D9%85%D9%8A_%D8%B9%D8%AF%D8%AF" title="اټومي عدد – pachto" lang="ps" hreflang="ps" data-title="اټومي عدد" data-language-autonym="پښتو" data-language-local-name="pachto" class="interlanguage-link-target"><span>پښتو</span></a></li><li class="interlanguage-link interwiki-pt mw-list-item"><a href="https://pt.wikipedia.org/wiki/N%C3%BAmero_at%C3%B3mico" title="Número atómico – portugais" lang="pt" hreflang="pt" data-title="Número atómico" data-language-autonym="Português" data-language-local-name="portugais" class="interlanguage-link-target"><span>Português</span></a></li><li class="interlanguage-link interwiki-qu mw-list-item"><a href="https://qu.wikipedia.org/wiki/I%C3%B1uku_%C3%B1iqi" title="Iñuku ñiqi – quechua" lang="qu" hreflang="qu" data-title="Iñuku ñiqi" data-language-autonym="Runa Simi" data-language-local-name="quechua" class="interlanguage-link-target"><span>Runa Simi</span></a></li><li class="interlanguage-link interwiki-ro mw-list-item"><a href="https://ro.wikipedia.org/wiki/Num%C4%83r_atomic" title="Număr atomic – roumain" lang="ro" hreflang="ro" data-title="Număr atomic" data-language-autonym="Română" data-language-local-name="roumain" class="interlanguage-link-target"><span>Română</span></a></li><li class="interlanguage-link interwiki-ru mw-list-item"><a href="https://ru.wikipedia.org/wiki/%D0%97%D0%B0%D1%80%D1%8F%D0%B4%D0%BE%D0%B2%D0%BE%D0%B5_%D1%87%D0%B8%D1%81%D0%BB%D0%BE" title="Зарядовое число – russe" lang="ru" hreflang="ru" data-title="Зарядовое число" data-language-autonym="Русский" data-language-local-name="russe" class="interlanguage-link-target"><span>Русский</span></a></li><li class="interlanguage-link interwiki-rue mw-list-item"><a href="https://rue.wikipedia.org/wiki/%D0%9F%D1%80%D0%BE%D1%82%D0%BE%D0%BD%D0%BE%D0%B2%D0%B5_%D1%87%D1%96%D1%81%D0%BB%D0%BE" title="Протонове чісло – ruthène" lang="rue" hreflang="rue" data-title="Протонове чісло" data-language-autonym="Русиньскый" data-language-local-name="ruthène" class="interlanguage-link-target"><span>Русиньскый</span></a></li><li class="interlanguage-link interwiki-sa mw-list-item"><a href="https://sa.wikipedia.org/wiki/%E0%A4%AA%E0%A4%B0%E0%A4%AE%E0%A4%BE%E0%A4%A3%E0%A5%81%E0%A4%95%E0%A5%8D%E0%A4%B0%E0%A4%AE%E0%A4%BE%E0%A4%99%E0%A5%8D%E0%A4%95%E0%A4%83" title="परमाणुक्रमाङ्कः – sanskrit" lang="sa" hreflang="sa" data-title="परमाणुक्रमाङ्कः" data-language-autonym="संस्कृतम्" data-language-local-name="sanskrit" class="interlanguage-link-target"><span>संस्कृतम्</span></a></li><li class="interlanguage-link interwiki-sah mw-list-item"><a href="https://sah.wikipedia.org/wiki/%D0%AD%D0%BB%D1%8D%D0%BC%D0%B8%D1%8D%D0%BD_%D0%B0%D1%82%D0%BE%D0%BC%D1%83%D0%BD_%D0%BD%D2%AF%D3%A9%D0%BC%D1%8D%D1%80%D1%8D" title="Элэмиэн атомун нүөмэрэ – iakoute" lang="sah" hreflang="sah" data-title="Элэмиэн атомун нүөмэрэ" data-language-autonym="Саха тыла" data-language-local-name="iakoute" class="interlanguage-link-target"><span>Саха тыла</span></a></li><li class="interlanguage-link interwiki-scn mw-list-item"><a href="https://scn.wikipedia.org/wiki/N%C3%B9mmuru_at%C3%B2micu" title="Nùmmuru atòmicu – sicilien" lang="scn" hreflang="scn" data-title="Nùmmuru atòmicu" data-language-autonym="Sicilianu" data-language-local-name="sicilien" class="interlanguage-link-target"><span>Sicilianu</span></a></li><li class="interlanguage-link interwiki-sco mw-list-item"><a href="https://sco.wikipedia.org/wiki/Atomic_nummer" title="Atomic nummer – écossais" lang="sco" hreflang="sco" data-title="Atomic nummer" data-language-autonym="Scots" data-language-local-name="écossais" class="interlanguage-link-target"><span>Scots</span></a></li><li class="interlanguage-link interwiki-sd mw-list-item"><a href="https://sd.wikipedia.org/wiki/%D8%A7%D9%8A%D9%BD%D9%85%D9%8A_%D9%86%D9%85%D8%A8%D8%B1" title="ايٽمي نمبر – sindhi" lang="sd" hreflang="sd" data-title="ايٽمي نمبر" data-language-autonym="سنڌي" data-language-local-name="sindhi" class="interlanguage-link-target"><span>سنڌي</span></a></li><li class="interlanguage-link interwiki-sh mw-list-item"><a href="https://sh.wikipedia.org/wiki/Atomski_broj" title="Atomski broj – serbo-croate" lang="sh" hreflang="sh" data-title="Atomski broj" data-language-autonym="Srpskohrvatski / српскохрватски" data-language-local-name="serbo-croate" class="interlanguage-link-target"><span>Srpskohrvatski / српскохрватски</span></a></li><li class="interlanguage-link interwiki-si mw-list-item"><a href="https://si.wikipedia.org/wiki/%E0%B6%B4%E0%B6%BB%E0%B6%B8%E0%B7%8F%E0%B6%AB%E0%B7%94%E0%B6%9A_%E0%B6%9A%E0%B7%8A%E2%80%8D%E0%B6%BB%E0%B6%B8%E0%B7%8F%E0%B6%82%E0%B6%9A%E0%B6%BA" title="පරමාණුක ක්‍රමාංකය – cingalais" lang="si" hreflang="si" data-title="පරමාණුක ක්‍රමාංකය" data-language-autonym="සිංහල" data-language-local-name="cingalais" class="interlanguage-link-target"><span>සිංහල</span></a></li><li class="interlanguage-link interwiki-simple mw-list-item"><a href="https://simple.wikipedia.org/wiki/Atomic_number" title="Atomic number – Simple English" lang="en-simple" hreflang="en-simple" data-title="Atomic number" data-language-autonym="Simple English" data-language-local-name="Simple English" class="interlanguage-link-target"><span>Simple English</span></a></li><li class="interlanguage-link interwiki-sk mw-list-item"><a href="https://sk.wikipedia.org/wiki/Prot%C3%B3nov%C3%A9_%C4%8D%C3%ADslo" title="Protónové číslo – slovaque" lang="sk" hreflang="sk" data-title="Protónové číslo" data-language-autonym="Slovenčina" data-language-local-name="slovaque" class="interlanguage-link-target"><span>Slovenčina</span></a></li><li class="interlanguage-link interwiki-sl mw-list-item"><a href="https://sl.wikipedia.org/wiki/Vrstno_%C5%A1tevilo" title="Vrstno število – slovène" lang="sl" hreflang="sl" data-title="Vrstno število" data-language-autonym="Slovenščina" data-language-local-name="slovène" class="interlanguage-link-target"><span>Slovenščina</span></a></li><li class="interlanguage-link interwiki-smn mw-list-item"><a href="https://smn.wikipedia.org/wiki/Oornigloho_(kemia)" title="Oornigloho (kemia) – same d’Inari" lang="smn" hreflang="smn" data-title="Oornigloho (kemia)" data-language-autonym="Anarâškielâ" data-language-local-name="same d’Inari" class="interlanguage-link-target"><span>Anarâškielâ</span></a></li><li class="interlanguage-link interwiki-sn badge-Q70893996 mw-list-item" title=""><a href="https://sn.wikipedia.org/wiki/Atomic_number" title="Atomic number – shona" lang="sn" hreflang="sn" data-title="Atomic number" data-language-autonym="ChiShona" data-language-local-name="shona" class="interlanguage-link-target"><span>ChiShona</span></a></li><li class="interlanguage-link interwiki-so mw-list-item"><a href="https://so.wikipedia.org/wiki/Tiro_atam" title="Tiro atam – somali" lang="so" hreflang="so" data-title="Tiro atam" data-language-autonym="Soomaaliga" data-language-local-name="somali" class="interlanguage-link-target"><span>Soomaaliga</span></a></li><li class="interlanguage-link interwiki-sq mw-list-item"><a href="https://sq.wikipedia.org/wiki/Numri_atomik" title="Numri atomik – albanais" lang="sq" hreflang="sq" data-title="Numri atomik" data-language-autonym="Shqip" data-language-local-name="albanais" class="interlanguage-link-target"><span>Shqip</span></a></li><li class="interlanguage-link interwiki-sr mw-list-item"><a href="https://sr.wikipedia.org/wiki/%D0%90%D1%82%D0%BE%D0%BC%D1%81%D0%BA%D0%B8_%D0%B1%D1%80%D0%BE%D1%98" title="Атомски број – serbe" lang="sr" hreflang="sr" data-title="Атомски број" data-language-autonym="Српски / srpski" data-language-local-name="serbe" class="interlanguage-link-target"><span>Српски / srpski</span></a></li><li class="interlanguage-link interwiki-stq mw-list-item"><a href="https://stq.wikipedia.org/wiki/Atomtaal" title="Atomtaal – saterlandais" lang="stq" hreflang="stq" data-title="Atomtaal" data-language-autonym="Seeltersk" data-language-local-name="saterlandais" class="interlanguage-link-target"><span>Seeltersk</span></a></li><li class="interlanguage-link interwiki-su mw-list-item"><a href="https://su.wikipedia.org/wiki/Nomer_atom" title="Nomer atom – soundanais" lang="su" hreflang="su" data-title="Nomer atom" data-language-autonym="Sunda" data-language-local-name="soundanais" class="interlanguage-link-target"><span>Sunda</span></a></li><li class="interlanguage-link interwiki-sv mw-list-item"><a href="https://sv.wikipedia.org/wiki/Atomnummer" title="Atomnummer – suédois" lang="sv" hreflang="sv" data-title="Atomnummer" data-language-autonym="Svenska" data-language-local-name="suédois" class="interlanguage-link-target"><span>Svenska</span></a></li><li class="interlanguage-link interwiki-sw mw-list-item"><a href="https://sw.wikipedia.org/wiki/Namba_atomia" title="Namba atomia – swahili" lang="sw" hreflang="sw" data-title="Namba atomia" data-language-autonym="Kiswahili" data-language-local-name="swahili" class="interlanguage-link-target"><span>Kiswahili</span></a></li><li class="interlanguage-link interwiki-ta mw-list-item"><a href="https://ta.wikipedia.org/wiki/%E0%AE%85%E0%AE%A3%E0%AF%81_%E0%AE%8E%E0%AE%A3%E0%AF%8D" title="அணு எண் – tamoul" lang="ta" hreflang="ta" data-title="அணு எண்" data-language-autonym="தமிழ்" data-language-local-name="tamoul" class="interlanguage-link-target"><span>தமிழ்</span></a></li><li class="interlanguage-link interwiki-te mw-list-item"><a href="https://te.wikipedia.org/wiki/%E0%B0%AA%E0%B0%B0%E0%B0%AE%E0%B0%BE%E0%B0%A3%E0%B1%81_%E0%B0%B8%E0%B0%82%E0%B0%96%E0%B1%8D%E0%B0%AF" title="పరమాణు సంఖ్య – télougou" lang="te" hreflang="te" data-title="పరమాణు సంఖ్య" data-language-autonym="తెలుగు" data-language-local-name="télougou" class="interlanguage-link-target"><span>తెలుగు</span></a></li><li class="interlanguage-link interwiki-tg mw-list-item"><a href="https://tg.wikipedia.org/wiki/%D0%A0%D0%B0%D2%9B%D0%B0%D0%BC%D0%B8_%D0%B0%D1%82%D0%BE%D0%BC%D3%A3" title="Рақами атомӣ – tadjik" lang="tg" hreflang="tg" data-title="Рақами атомӣ" data-language-autonym="Тоҷикӣ" data-language-local-name="tadjik" class="interlanguage-link-target"><span>Тоҷикӣ</span></a></li><li class="interlanguage-link interwiki-th mw-list-item"><a href="https://th.wikipedia.org/wiki/%E0%B9%80%E0%B8%A5%E0%B8%82%E0%B8%AD%E0%B8%B0%E0%B8%95%E0%B8%AD%E0%B8%A1" title="เลขอะตอม – thaï" lang="th" hreflang="th" data-title="เลขอะตอม" data-language-autonym="ไทย" data-language-local-name="thaï" class="interlanguage-link-target"><span>ไทย</span></a></li><li class="interlanguage-link interwiki-tl mw-list-item"><a href="https://tl.wikipedia.org/wiki/Atomikong_bilang" title="Atomikong bilang – tagalog" lang="tl" hreflang="tl" data-title="Atomikong bilang" data-language-autonym="Tagalog" data-language-local-name="tagalog" class="interlanguage-link-target"><span>Tagalog</span></a></li><li class="interlanguage-link interwiki-tr mw-list-item"><a href="https://tr.wikipedia.org/wiki/Atom_numaras%C4%B1" title="Atom numarası – turc" lang="tr" hreflang="tr" data-title="Atom numarası" data-language-autonym="Türkçe" data-language-local-name="turc" class="interlanguage-link-target"><span>Türkçe</span></a></li><li class="interlanguage-link interwiki-uk mw-list-item"><a href="https://uk.wikipedia.org/wiki/%D0%90%D1%82%D0%BE%D0%BC%D0%BD%D0%B8%D0%B9_%D0%BD%D0%BE%D0%BC%D0%B5%D1%80" title="Атомний номер – ukrainien" lang="uk" hreflang="uk" data-title="Атомний номер" data-language-autonym="Українська" data-language-local-name="ukrainien" class="interlanguage-link-target"><span>Українська</span></a></li><li class="interlanguage-link interwiki-ur mw-list-item"><a href="https://ur.wikipedia.org/wiki/%D8%AC%D9%88%DB%81%D8%B1%DB%8C_%D8%B9%D8%AF%D8%AF" title="جوہری عدد – ourdou" lang="ur" hreflang="ur" data-title="جوہری عدد" data-language-autonym="اردو" data-language-local-name="ourdou" class="interlanguage-link-target"><span>اردو</span></a></li><li class="interlanguage-link interwiki-uz mw-list-item"><a href="https://uz.wikipedia.org/wiki/Atom_raqami" title="Atom raqami – ouzbek" lang="uz" hreflang="uz" data-title="Atom raqami" data-language-autonym="Oʻzbekcha / ўзбекча" data-language-local-name="ouzbek" class="interlanguage-link-target"><span>Oʻzbekcha / ўзбекча</span></a></li><li class="interlanguage-link interwiki-vec mw-list-item"><a href="https://vec.wikipedia.org/wiki/N%C3%B9maro_at%C3%B2mego" title="Nùmaro atòmego – vénitien" lang="vec" hreflang="vec" data-title="Nùmaro atòmego" data-language-autonym="Vèneto" data-language-local-name="vénitien" class="interlanguage-link-target"><span>Vèneto</span></a></li><li class="interlanguage-link interwiki-vi mw-list-item"><a href="https://vi.wikipedia.org/wiki/S%E1%BB%91_nguy%C3%AAn_t%E1%BB%AD" title="Số nguyên tử – vietnamien" lang="vi" hreflang="vi" data-title="Số nguyên tử" data-language-autonym="Tiếng Việt" data-language-local-name="vietnamien" class="interlanguage-link-target"><span>Tiếng Việt</span></a></li><li class="interlanguage-link interwiki-vls mw-list-item"><a href="https://vls.wikipedia.org/wiki/Atoomnummer" title="Atoomnummer – flamand occidental" lang="vls" hreflang="vls" data-title="Atoomnummer" data-language-autonym="West-Vlams" data-language-local-name="flamand occidental" class="interlanguage-link-target"><span>West-Vlams</span></a></li><li class="interlanguage-link interwiki-war mw-list-item"><a href="https://war.wikipedia.org/wiki/Ihap_atonomiko" title="Ihap atonomiko – waray" lang="war" hreflang="war" data-title="Ihap atonomiko" data-language-autonym="Winaray" data-language-local-name="waray" class="interlanguage-link-target"><span>Winaray</span></a></li><li class="interlanguage-link interwiki-wuu mw-list-item"><a href="https://wuu.wikipedia.org/wiki/%E5%8E%9F%E5%AD%90%E5%BA%8F%E6%95%B0" title="原子序数 – wu" lang="wuu" hreflang="wuu" data-title="原子序数" data-language-autonym="吴语" data-language-local-name="wu" class="interlanguage-link-target"><span>吴语</span></a></li><li class="interlanguage-link interwiki-xh mw-list-item"><a href="https://xh.wikipedia.org/wiki/Inombolo_ye-atom" title="Inombolo ye-atom – xhosa" lang="xh" hreflang="xh" data-title="Inombolo ye-atom" data-language-autonym="IsiXhosa" data-language-local-name="xhosa" class="interlanguage-link-target"><span>IsiXhosa</span></a></li><li class="interlanguage-link interwiki-yi mw-list-item"><a href="https://yi.wikipedia.org/wiki/%D7%90%D7%98%D7%90%D7%9D_%D7%A0%D7%95%D7%9E%D7%A2%D7%A8" title="אטאם נומער – yiddish" lang="yi" hreflang="yi" data-title="אטאם נומער" data-language-autonym="ייִדיש" data-language-local-name="yiddish" class="interlanguage-link-target"><span>ייִדיש</span></a></li><li class="interlanguage-link interwiki-yo mw-list-item"><a href="https://yo.wikipedia.org/wiki/N%E1%BB%8D%CC%81mb%C3%A0_%C3%A1t%E1%BB%8D%CC%80m%C3%B9" title="Nọ́mbà átọ̀mù – yoruba" lang="yo" hreflang="yo" data-title="Nọ́mbà átọ̀mù" data-language-autonym="Yorùbá" data-language-local-name="yoruba" class="interlanguage-link-target"><span>Yorùbá</span></a></li><li class="interlanguage-link interwiki-zh mw-list-item"><a href="https://zh.wikipedia.org/wiki/%E5%8E%9F%E5%AD%90%E5%BA%8F%E6%95%B0" title="原子序数 – chinois" lang="zh" hreflang="zh" data-title="原子序数" data-language-autonym="中文" data-language-local-name="chinois" class="interlanguage-link-target"><span>中文</span></a></li><li class="interlanguage-link interwiki-zh-classical mw-list-item"><a href="https://zh-classical.wikipedia.org/wiki/%E5%8E%9F%E5%AD%90%E5%BA%8F" title="原子序 – chinois littéraire" lang="lzh" hreflang="lzh" data-title="原子序" data-language-autonym="文言" data-language-local-name="chinois littéraire" class="interlanguage-link-target"><span>文言</span></a></li><li class="interlanguage-link interwiki-zh-min-nan mw-list-item"><a href="https://zh-min-nan.wikipedia.org/wiki/Go%C3%A2n-ch%C3%BA-hoan" title="Goân-chú-hoan – minnan" lang="nan" hreflang="nan" data-title="Goân-chú-hoan" data-language-autonym="閩南語 / Bân-lâm-gú" data-language-local-name="minnan" class="interlanguage-link-target"><span>閩南語 / Bân-lâm-gú</span></a></li><li class="interlanguage-link interwiki-zh-yue mw-list-item"><a href="https://zh-yue.wikipedia.org/wiki/%E5%8E%9F%E5%AD%90%E5%BA%8F%E6%95%B8" title="原子序數 – cantonais" lang="yue" hreflang="yue" data-title="原子序數" data-language-autonym="粵語" data-language-local-name="cantonais" class="interlanguage-link-target"><span>粵語</span></a></li><li class="interlanguage-link interwiki-zu mw-list-item"><a href="https://zu.wikipedia.org/wiki/Inani_lobuchwe" title="Inani lobuchwe – zoulou" lang="zu" hreflang="zu" data-title="Inani lobuchwe" data-language-autonym="IsiZulu" data-language-local-name="zoulou" class="interlanguage-link-target"><span>IsiZulu</span></a></li> </ul> <div class="after-portlet after-portlet-lang"><span class="wb-langlinks-edit wb-langlinks-link"><a href="https://www.wikidata.org/wiki/Special:EntityPage/Q23809#sitelinks-wikipedia" title="Modifier les liens interlangues" class="wbc-editpage">Modifier les liens</a></span></div> </div> </div> </div> </header> <div class="vector-page-toolbar"> <div class="vector-page-toolbar-container"> <div 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<div class="vector-sticky-pinned-container"> <nav class="vector-page-tools-landmark" aria-label="Outils de la page"> <div id="vector-page-tools-pinned-container" class="vector-pinned-container"> </div> </nav> <nav class="vector-appearance-landmark" aria-label="Apparence"> <div id="vector-appearance-pinned-container" class="vector-pinned-container"> <div id="vector-appearance" class="vector-appearance vector-pinnable-element"> <div class="vector-pinnable-header vector-appearance-pinnable-header vector-pinnable-header-pinned" data-feature-name="appearance-pinned" data-pinnable-element-id="vector-appearance" data-pinned-container-id="vector-appearance-pinned-container" data-unpinned-container-id="vector-appearance-unpinned-container" > <div class="vector-pinnable-header-label">Apparence</div> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-pin-button" data-event-name="pinnable-header.vector-appearance.pin">déplacer vers la barre latérale</button> <button 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srcset="//upload.wikimedia.org/wikipedia/commons/thumb/4/46/Isotope_CNO.svg/600px-Isotope_CNO.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/4/46/Isotope_CNO.svg/800px-Isotope_CNO.svg.png 2x" data-file-width="700" data-file-height="467" /></a><figcaption></figcaption></figure> <p>Le <b>numéro atomique</b> d'un <a href="/wiki/Atome" title="Atome">atome</a>, d'un <a href="/wiki/Nucl%C3%A9ide" title="Nucléide">nucléide</a> ou plus généralement d'un <a href="/wiki/%C3%89l%C3%A9ment_chimique" title="Élément chimique">élément chimique</a>, est son nombre de <a href="/wiki/Proton" title="Proton">protons</a>. On le représente généralement par la lettre <span class="texhtml mvar" style="font-style:italic;">Z</span><sup id="cite_ref-ZA_1-0" class="reference"><a href="#cite_note-ZA-1"><span class="cite_crochet">[</span>a<span class="cite_crochet">]</span></a></sup>. </p><p>Un atome est constitué d'un <a href="/wiki/Noyau_atomique" title="Noyau atomique">noyau</a>, agglomération compacte de protons (p<sup>+</sup>) et de <a href="/wiki/Neutron" title="Neutron">neutrons</a> (n<sup>0</sup>), autour duquel circulent des <a href="/wiki/%C3%89lectron" title="Électron">électrons</a> (e<sup>−</sup>). Dans un atome électriquement neutre, le nombre des électrons est aussi égal au numéro atomique<sup id="cite_ref-2" class="reference"><a href="#cite_note-2"><span class="cite_crochet">[</span>b<span class="cite_crochet">]</span></a></sup>. </p><p>Le symbole complet d'un nucléide ou d'un <a href="/wiki/Isotope" title="Isotope">isotope</a> est <span class="unicode" style="white-space:nowrap;"><span style="display:inline-block; margin-bottom:-0.3em; vertical-align:-0.4em; line-height:1em; font-size:80%; text-align:right;"><span class="texhtml mvar" style="font-style:italic;">A</span><br /><span class="texhtml mvar" style="font-style:italic;">Z</span></span>X</span>, où <span class="texhtml">X</span> est le <a href="/wiki/Liste_des_%C3%A9l%C3%A9ments_chimiques" title="Liste des éléments chimiques">symbole de l'élément</a>, <span class="texhtml mvar" style="font-style:italic;">Z</span> le numéro atomique et <span class="texhtml mvar" style="font-style:italic;">A</span><sup id="cite_ref-ZA_1-1" class="reference"><a href="#cite_note-ZA-1"><span class="cite_crochet">[</span>a<span class="cite_crochet">]</span></a></sup> le <a href="/wiki/Nombre_de_masse" title="Nombre de masse">nombre de masse</a> (somme du nombre de protons et du nombre de neutrons, donc le nombre de <a href="/wiki/Nucl%C3%A9on" title="Nucléon">nucléons</a>)<sup id="cite_ref-3" class="reference"><a href="#cite_note-3"><span class="cite_crochet">[</span>1<span class="cite_crochet">]</span></a></sup>. </p> <meta property="mw:PageProp/toc" /> <div class="mw-heading mw-heading2"><h2 id="Histoire">Histoire</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Num%C3%A9ro_atomique&veaction=edit&section=1" title="Modifier la section : Histoire" class="mw-editsection-visualeditor"><span>modifier</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Num%C3%A9ro_atomique&action=edit&section=1" title="Modifier le code source de la section : Histoire"><span>modifier le code</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>À l'origine, le numéro atomique déterminait la position d'un <a href="/wiki/%C3%89l%C3%A9ment_chimique" title="Élément chimique">élément chimique</a> dans le <a href="/wiki/Tableau_p%C3%A9riodique_des_%C3%A9l%C3%A9ments" title="Tableau périodique des éléments">tableau périodique</a>. Quand <a href="/wiki/Dmitri_Mendele%C3%AFev" title="Dmitri Mendeleïev">Dmitri Mendeleïev</a> ordonna les corps chimiques connus en fonction de leurs propriétés, il s'aperçut que le classement dans l'ordre strict de <a href="/wiki/Masse_atomique" title="Masse atomique">masse atomique</a> pouvait conduire à des situations illogiques : par exemple, l'<a href="/wiki/Iode" title="Iode">iode</a> et le <a href="/wiki/Tellure" title="Tellure">tellure</a> doivent être inversés par rapport à leur masse atomique. Ce classement selon les propriétés chimiques déterminait le numéro atomique, approximativement proportionnel à la masse de l'atome, mais comme le prouvent les quelques inversions relevées, représentatif d'autres propriétés que la masse. </p> <div class="mw-heading mw-heading3"><h3 id="Relation_à_la_masse_et_à_la_charge"><span id="Relation_.C3.A0_la_masse_et_.C3.A0_la_charge"></span>Relation à la masse et à la charge</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Num%C3%A9ro_atomique&veaction=edit&section=2" title="Modifier la section : Relation à la masse et à la charge" class="mw-editsection-visualeditor"><span>modifier</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Num%C3%A9ro_atomique&action=edit&section=2" title="Modifier le code source de la section : Relation à la masse et à la charge"><span>modifier le code</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Ces anomalies entre les classements par numéro atomique et par <a href="/wiki/Masse_atomique" title="Masse atomique">masse atomique</a> ont été finalement expliquées par les travaux d'<a href="/wiki/Henry_Moseley" title="Henry Moseley">Henry Moseley</a> en 1913, qui a mis en évidence une corrélation stricte entre le spectre de diffraction des <a href="/wiki/Rayon_X" title="Rayon X">rayons X</a> des éléments et leur emplacement dans le tableau périodique. Il a été montré par la suite que le numéro atomique correspond à la charge électrique du <a href="/wiki/Noyau_atomique" title="Noyau atomique">noyau</a> (c’est-à-dire à son nombre de <a href="/wiki/Proton" title="Proton">protons</a>). C'est bien la charge qui détermine les propriétés d'un élément, et non sa masse. </p><p>Le numéro atomique est corrélé au <a href="/wiki/Nombre_de_masse" title="Nombre de masse">nombre de masse</a> (même s'ils ne doivent pas être confondus, de même que le nombre de masse ne doit pas être confondu avec la <a href="/wiki/Masse_atomique" title="Masse atomique">masse atomique</a>), puisque le nombre de masse correspond à la somme du nombre de <a href="/wiki/Proton" title="Proton">protons</a> et du nombre de <a href="/wiki/Neutron" title="Neutron">neutrons</a> dans le noyau d'un <a href="/wiki/Atome" title="Atome">atome</a>. Le nombre de masse est fréquemment mentionné après le nom de l'élément : on parle par exemple de « <a href="/wiki/Carbone_14" title="Carbone 14">carbone 14</a> » (utilisé par exemple pour <a href="/wiki/Datation_par_le_carbone_14" class="mw-redirect" title="Datation par le carbone 14">dater</a> des objets d'origine organique en <a href="/wiki/Arch%C3%A9ologie" title="Archéologie">archéologie</a>) pour faire la distinction avec le carbone « 12 » (son <a href="/wiki/Isotope" title="Isotope">isotope</a> le plus courant dans la nature). </p> <div class="mw-heading mw-heading2"><h2 id="Notes_et_références"><span id="Notes_et_r.C3.A9f.C3.A9rences"></span>Notes et références</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Num%C3%A9ro_atomique&veaction=edit&section=3" title="Modifier la section : Notes et références" class="mw-editsection-visualeditor"><span>modifier</span></a><span class="mw-editsection-divider"> | </span><a 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href="#cite_ref-ZA_1-0">a</a> et <a href="#cite_ref-ZA_1-1">b</a></sup> </span><span class="reference-text">La lettre <span class="texhtml mvar" style="font-style:italic;">Z</span> est l'<a href="/wiki/Initiale_(lettre)" title="Initiale (lettre)">initiale</a> du mot <a href="/wiki/Allemand" title="Allemand">allemand</a> Zahl de <i>Kernladungszahl</i> (« numéro atomique »), et <span class="texhtml mvar" style="font-style:italic;">A</span> celle de <i>Atommasse</i> (« masse atomique ») <a rel="nofollow" class="external free" href="https://www.spektrum.de/lexikon/astronomie/isotop/205">https://www.spektrum.de/lexikon/astronomie/isotop/205</a></span> </li> <li id="cite_note-2"><span class="mw-cite-backlink noprint"><a href="#cite_ref-2">↑</a> </span><span class="reference-text"><span class="texhtml mvar" style="font-style:italic;">Z</span> <a href="/wiki/Proton" title="Proton">protons</a> de <a href="/wiki/Charge_%C3%A9lectrique" title="Charge électrique">charge</a> <span class="texhtml mvar" style="font-style:italic;">+<a href="/wiki/Charge_%C3%A9l%C3%A9mentaire" title="Charge élémentaire">e</a></span> et <span class="texhtml mvar" style="font-style:italic;">Z</span> <a href="/wiki/%C3%89lectron" title="Électron">électrons</a> de charge <span class="texhtml mvar" style="font-style:italic;">−e</span>, donc charge totale nulle.</span> </li> </ol></div> </div> <div class="mw-heading mw-heading3"><h3 id="Références"><span id="R.C3.A9f.C3.A9rences"></span>Références</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Num%C3%A9ro_atomique&veaction=edit&section=5" title="Modifier la section : Références" class="mw-editsection-visualeditor"><span>modifier</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Num%C3%A9ro_atomique&action=edit&section=5" title="Modifier le code source de la section : Références"><span>modifier le code</span></a><span class="mw-editsection-bracket">]</span></span></div> <div class="references-small decimal" style=""><div class="mw-references-wrap"><ol class="references"> <li id="cite_note-3"><span class="mw-cite-backlink noprint"><a href="#cite_ref-3">↑</a> </span><span class="reference-text"><span class="noarchive">« <a rel="nofollow" class="external text" href="https://web.archive.org/web/20171014083322/http://nte-serveur.univ-lyon1.fr/gerland1prof/cours/cours1/cours1atomistique1.html">De l'atome à la classification périodique</a> »</span>, cours de thermodynamique, <a href="/wiki/Universit%C3%A9_de_Lyon" title="Université de Lyon">université de Lyon</a> <small>(version du <time class="nowrap" datetime="2017-10-14" data-sort-value="2017-10-14">14 octobre 2017</time> sur <i><a href="/wiki/Internet_Archive" title="Internet Archive">Internet Archive</a></i>)</small>.</span> </li> </ol></div> </div> <div class="mw-heading mw-heading2"><h2 id="Annexes">Annexes</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Num%C3%A9ro_atomique&veaction=edit&section=6" title="Modifier la section : Annexes" class="mw-editsection-visualeditor"><span>modifier</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Num%C3%A9ro_atomique&action=edit&section=6" title="Modifier le code source de la section : Annexes"><span>modifier le code</span></a><span class="mw-editsection-bracket">]</span></span></div> <div class="mw-heading mw-heading3"><h3 id="Articles_connexes">Articles connexes</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Num%C3%A9ro_atomique&veaction=edit&section=7" title="Modifier la section : Articles connexes" class="mw-editsection-visualeditor"><span>modifier</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Num%C3%A9ro_atomique&action=edit&section=7" title="Modifier le code source de la section : Articles connexes"><span>modifier le code</span></a><span class="mw-editsection-bracket">]</span></span></div> <ul><li><a href="/wiki/Tableau_p%C3%A9riodique_des_%C3%A9l%C3%A9ments" title="Tableau périodique des éléments">Tableau périodique des éléments</a></li></ul> <div class="mw-heading mw-heading3"><h3 id="Liens_externes">Liens externes</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Num%C3%A9ro_atomique&veaction=edit&section=8" title="Modifier la section : Liens externes" class="mw-editsection-visualeditor"><span>modifier</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Num%C3%A9ro_atomique&action=edit&section=8" title="Modifier le code source de la section : Liens externes"><span>modifier le code</span></a><span class="mw-editsection-bracket">]</span></span></div> <ul><li><div class="liste-horizontale"><span class="wd_identifiers"><a href="/wiki/Autorit%C3%A9_(sciences_de_l%27information)" 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