CINXE.COM

<!DOCTYPE html> <html class="client-nojs vector-feature-language-in-header-enabled vector-feature-language-in-main-page-header-disabled vector-feature-sticky-header-disabled vector-feature-page-tools-pinned-disabled vector-feature-toc-pinned-clientpref-1 vector-feature-main-menu-pinned-disabled vector-feature-limited-width-clientpref-1 vector-feature-limited-width-content-enabled vector-feature-custom-font-size-clientpref-1 vector-feature-appearance-pinned-clientpref-1 vector-feature-night-mode-enabled skin-theme-clientpref-day vector-toc-available" lang="br" dir="ltr"> <head> <meta charset="UTF-8"> <title>Mas atomek - Wikipedia</title> <script>(function(){var className="client-js vector-feature-language-in-header-enabled vector-feature-language-in-main-page-header-disabled vector-feature-sticky-header-disabled vector-feature-page-tools-pinned-disabled vector-feature-toc-pinned-clientpref-1 vector-feature-main-menu-pinned-disabled vector-feature-limited-width-clientpref-1 vector-feature-limited-width-content-enabled vector-feature-custom-font-size-clientpref-1 vector-feature-appearance-pinned-clientpref-1 vector-feature-night-mode-enabled skin-theme-clientpref-day vector-toc-available";var cookie=document.cookie.match(/(?:^|; )brwikimwclientpreferences=([^;]+)/);if(cookie){cookie[1].split('%2C').forEach(function(pref){className=className.replace(new RegExp('(^| )'+pref.replace(/-clientpref-\w+$|[^\w-]+/g,'')+'-clientpref-\\w+( |$)'),'$1'+pref+'$2');});}document.documentElement.className=className;}());RLCONF={"wgBreakFrames":false,"wgSeparatorTransformTable":[",\t."," \t,"],"wgDigitTransformTable":["",""], "wgDefaultDateFormat":"dmy","wgMonthNames":["","Genver","C'hwevrer","Meurzh","Ebrel","Mae","Mezheven","Gouere","Eost","Gwengolo","Here","Du","Kerzu"],"wgRequestId":"b9d08999-dfa2-4da6-9046-9c000fbcda81","wgCanonicalNamespace":"","wgCanonicalSpecialPageName":false,"wgNamespaceNumber":0,"wgPageName":"Mas_atomek","wgTitle":"Mas atomek","wgCurRevisionId":1634599,"wgRevisionId":377050,"wgArticleId":3053,"wgIsArticle":true,"wgIsRedirect":false,"wgAction":"view","wgUserName":null,"wgUserGroups":["*"],"wgCategories":["Danvez pennadoù","Perzh kimiek","Fizik"],"wgPageViewLanguage":"br","wgPageContentLanguage":"br","wgPageContentModel":"wikitext","wgRelevantPageName":"Mas_atomek","wgRelevantArticleId":3053,"wgIsProbablyEditable":true,"wgRelevantPageIsProbablyEditable":true,"wgRestrictionEdit":[],"wgRestrictionMove":[],"wgNoticeProject":"wikipedia","wgCiteReferencePreviewsActive":true,"wgMediaViewerOnClick":true,"wgMediaViewerEnabledByDefault":true,"wgPopupsFlags":0,"wgVisualEditor":{ "pageLanguageCode":"br","pageLanguageDir":"ltr","pageVariantFallbacks":"br"},"wgMFDisplayWikibaseDescriptions":{"search":true,"watchlist":true,"tagline":true,"nearby":true},"wgWMESchemaEditAttemptStepOversample":false,"wgWMEPageLength":1000,"wgRelatedArticlesCompat":[],"wgEditSubmitButtonLabelPublish":true,"wgULSPosition":"interlanguage","wgULSisCompactLinksEnabled":false,"wgVector2022LanguageInHeader":true,"wgULSisLanguageSelectorEmpty":false,"wgWikibaseItemId":"Q3840065","wgCheckUserClientHintsHeadersJsApi":["brands","architecture","bitness","fullVersionList","mobile","model","platform","platformVersion"],"GEHomepageSuggestedEditsEnableTopics":true,"wgGETopicsMatchModeEnabled":false,"wgGEStructuredTaskRejectionReasonTextInputEnabled":false,"wgGELevelingUpEnabledForUser":false};RLSTATE={"ext.globalCssJs.user.styles":"ready","site.styles":"ready","user.styles":"ready","ext.globalCssJs.user":"ready","user":"ready","user.options":"loading","mediawiki.action.styles":"ready", "mediawiki.interface.helpers.styles":"ready","mediawiki.codex.messagebox.styles":"ready","skins.vector.search.codex.styles":"ready","skins.vector.styles":"ready","skins.vector.icons":"ready","ext.wikimediamessages.styles":"ready","ext.visualEditor.desktopArticleTarget.noscript":"ready","ext.uls.interlanguage":"ready","wikibase.client.init":"ready","ext.wikimediaBadges":"ready"};RLPAGEMODULES=["site","mediawiki.page.ready","mediawiki.toc","skins.vector.js","ext.centralNotice.geoIP","ext.centralNotice.startUp","ext.urlShortener.toolbar","ext.centralauth.centralautologin","mmv.bootstrap","ext.popups","ext.visualEditor.desktopArticleTarget.init","ext.visualEditor.targetLoader","ext.echo.centralauth","ext.eventLogging","ext.wikimediaEvents","ext.navigationTiming","ext.uls.interface","ext.cx.eventlogging.campaigns","ext.cx.uls.quick.actions","wikibase.client.vector-2022","ext.checkUser.clientHints","ext.growthExperiments.SuggestedEditSession","wikibase.sidebar.tracking"];</script> <script>(RLQ=window.RLQ||[]).push(function(){mw.loader.impl(function(){return["user.options@12s5i",function($,jQuery,require,module){mw.user.tokens.set({"patrolToken":"+\\","watchToken":"+\\","csrfToken":"+\\"}); }];});});</script> <link rel="stylesheet" href="/w/load.php?lang=br&modules=ext.uls.interlanguage%7Cext.visualEditor.desktopArticleTarget.noscript%7Cext.wikimediaBadges%7Cext.wikimediamessages.styles%7Cmediawiki.action.styles%7Cmediawiki.codex.messagebox.styles%7Cmediawiki.interface.helpers.styles%7Cskins.vector.icons%2Cstyles%7Cskins.vector.search.codex.styles%7Cwikibase.client.init&only=styles&skin=vector-2022"> <script async="" src="/w/load.php?lang=br&modules=startup&only=scripts&raw=1&skin=vector-2022"></script> <meta name="ResourceLoaderDynamicStyles" content=""> <link rel="stylesheet" href="/w/load.php?lang=br&modules=site.styles&only=styles&skin=vector-2022"> <meta name="generator" content="MediaWiki 1.44.0-wmf.5"> <meta name="referrer" content="origin"> <meta name="referrer" content="origin-when-cross-origin"> <meta name="robots" content="noindex,nofollow,max-image-preview:standard"> <meta name="format-detection" content="telephone=no"> <meta name="viewport" content="width=1120"> <meta property="og:title" content="Mas atomek - Wikipedia"> <meta property="og:type" content="website"> <link rel="preconnect" href="//upload.wikimedia.org"> <link rel="alternate" media="only screen and (max-width: 640px)" href="//br.m.wikipedia.org/wiki/Mas_atomek"> <link rel="alternate" type="application/x-wiki" title="Kemmañ" href="/w/index.php?title=Mas_atomek&action=edit"> <link rel="apple-touch-icon" href="/static/apple-touch/wikipedia.png"> <link rel="icon" href="/static/favicon/wikipedia.ico"> <link rel="search" type="application/opensearchdescription+xml" href="/w/rest.php/v1/search" title="Wikipedia (br)"> <link rel="EditURI" type="application/rsd+xml" href="//br.wikipedia.org/w/api.php?action=rsd"> <link rel="canonical" href="https://br.wikipedia.org/wiki/Mas_atomek"> <link rel="license" href="https://creativecommons.org/licenses/by-sa/4.0/deed.br"> <link rel="alternate" type="application/atom+xml" title="Lanv Atom evit Wikipedia" href="/w/index.php?title=Dibar:Kemmo%C3%B9Diwezha%C3%B1&feed=atom"> <link rel="dns-prefetch" href="//meta.wikimedia.org" /> <link rel="dns-prefetch" href="//login.wikimedia.org"> </head> <body class="skin--responsive skin-vector skin-vector-search-vue mediawiki ltr sitedir-ltr mw-hide-empty-elt ns-0 ns-subject mw-editable page-Mas_atomek rootpage-Mas_atomek skin-vector-2022 action-view"><a class="mw-jump-link" href="#bodyContent">Mont d’an endalc’had</a> <div class="vector-header-container"> <header class="vector-header mw-header"> <div class="vector-header-start"> <nav class="vector-main-menu-landmark" aria-label="Lec'hienn"> <div id="vector-main-menu-dropdown" class="vector-dropdown vector-main-menu-dropdown vector-button-flush-left vector-button-flush-right" > <input type="checkbox" id="vector-main-menu-dropdown-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-vector-main-menu-dropdown" class="vector-dropdown-checkbox " aria-label="Meuziad pennañ" > <label id="vector-main-menu-dropdown-label" for="vector-main-menu-dropdown-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-menu mw-ui-icon-wikimedia-menu"></span> <span class="vector-dropdown-label-text">Meuziad pennañ</span> </label> <div class="vector-dropdown-content"> <div id="vector-main-menu-unpinned-container" class="vector-unpinned-container"> <div id="vector-main-menu" class="vector-main-menu vector-pinnable-element"> <div class="vector-pinnable-header vector-main-menu-pinnable-header vector-pinnable-header-unpinned" data-feature-name="main-menu-pinned" data-pinnable-element-id="vector-main-menu" data-pinned-container-id="vector-main-menu-pinned-container" data-unpinned-container-id="vector-main-menu-unpinned-container" > <div class="vector-pinnable-header-label">Meuziad pennañ</div> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-pin-button" data-event-name="pinnable-header.vector-main-menu.pin">mont d’ar varrenn gostez</button> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-unpin-button" data-event-name="pinnable-header.vector-main-menu.unpin">kuzhat</button> </div> <div id="p-navigation" class="vector-menu mw-portlet mw-portlet-navigation" > <div class="vector-menu-heading"> Merdeiñ </div> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="n-mainpage" class="mw-list-item"><a href="/wiki/Degemer" title="Diskouez ar Bajenn bennañ [z]" accesskey="z"><span>Degemer</span></a></li><li id="n-recentchanges" class="mw-list-item"><a href="/wiki/Dibar:Kemmo%C3%B9Diwezha%C3%B1" title="Roll ar c'hemmoù diwezhañ c'hoarvezet war ar wiki. [r]" accesskey="r"><span>Kemmoù diwezhañ</span></a></li><li id="n-randompage" class="mw-list-item"><a href="/wiki/Dibar:DreZegouezh" title="Diskwel ur bajenn dre zegouezh [x]" accesskey="x"><span>Ur bajenn dre zegouezh</span></a></li><li id="n-Meneger-hollek" class="mw-list-item"><a href="/wiki/Dibar:AnHollBajenno%C3%B9"><span>Meneger hollek</span></a></li> </ul> </div> </div> <div id="p-Kemer_perzh" class="vector-menu mw-portlet mw-portlet-Kemer_perzh" > <div class="vector-menu-heading"> Kemer perzh </div> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="n-help" class="mw-list-item"><a href="https://www.mediawiki.org/wiki/Special:MyLanguage/Help:Contents" title="Skoazell."><span>Skoazell</span></a></li><li id="n-portal" class="mw-list-item"><a href="/wiki/Wikipedia:Porched_ar_gumuniezh" title="Diwar-benn ar raktres, ar pezh a c'hallit ober, pelec'h kavout an traoù"><span>Porched ar gumuniezh</span></a></li><li id="n-Tavarn" class="mw-list-item"><a href="/wiki/Wikipedia:Kumuniezh/An_davarn"><span>Tavarn</span></a></li> </ul> </div> </div> </div> </div> </div> </div> </nav> <a href="/wiki/Degemer" class="mw-logo"> <img class="mw-logo-icon" src="/static/images/icons/wikipedia.png" alt="" aria-hidden="true" height="50" width="50"> <span class="mw-logo-container skin-invert"> <img class="mw-logo-wordmark" alt="Wikipedia" src="/static/images/mobile/copyright/wikipedia-wordmark-en.svg" style="width: 7.5em; height: 1.125em;"> <img class="mw-logo-tagline" alt="" src="/static/images/mobile/copyright/wikipedia-tagline-br.svg" width="119" height="13" style="width: 7.4375em; height: 0.8125em;"> </span> </a> </div> <div class="vector-header-end"> <div id="p-search" role="search" class="vector-search-box-vue vector-search-box-collapses vector-search-box-show-thumbnail vector-search-box-auto-expand-width vector-search-box"> <a href="/wiki/Dibar:Klask" class="cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--icon-only search-toggle" title="Klaskit er wiki-mañ [f]" accesskey="f"><span class="vector-icon mw-ui-icon-search mw-ui-icon-wikimedia-search"></span> <span>Klask</span> </a> <div class="vector-typeahead-search-container"> <div class="cdx-typeahead-search cdx-typeahead-search--show-thumbnail cdx-typeahead-search--auto-expand-width"> <form action="/w/index.php" id="searchform" class="cdx-search-input cdx-search-input--has-end-button"> <div id="simpleSearch" class="cdx-search-input__input-wrapper" data-search-loc="header-moved"> <div class="cdx-text-input cdx-text-input--has-start-icon"> <input class="cdx-text-input__input" type="search" name="search" placeholder="Klask e Wikipedia" aria-label="Klask e Wikipedia" autocapitalize="sentences" title="Klaskit er wiki-mañ [f]" accesskey="f" id="searchInput" > <span class="cdx-text-input__icon cdx-text-input__start-icon"></span> </div> <input type="hidden" name="title" value="Dibar:Klask"> </div> <button class="cdx-button cdx-search-input__end-button">Klask</button> </form> </div> </div> </div> <nav class="vector-user-links vector-user-links-wide" aria-label="Ostilhoù personel"> <div class="vector-user-links-main"> <div id="p-vector-user-menu-preferences" class="vector-menu mw-portlet emptyPortlet" > <div class="vector-menu-content"> <ul class="vector-menu-content-list"> </ul> </div> </div> <div id="p-vector-user-menu-userpage" class="vector-menu mw-portlet emptyPortlet" > <div class="vector-menu-content"> <ul class="vector-menu-content-list"> </ul> </div> </div> <nav class="vector-appearance-landmark" aria-label="Neuz"> <div id="vector-appearance-dropdown" class="vector-dropdown " title="Change the appearance of the page's font size, width, and color" > <input type="checkbox" id="vector-appearance-dropdown-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-vector-appearance-dropdown" class="vector-dropdown-checkbox " aria-label="Neuz" > <label id="vector-appearance-dropdown-label" for="vector-appearance-dropdown-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-appearance mw-ui-icon-wikimedia-appearance"></span> <span class="vector-dropdown-label-text">Neuz</span> </label> <div class="vector-dropdown-content"> <div id="vector-appearance-unpinned-container" class="vector-unpinned-container"> </div> </div> </div> </nav> <div id="p-vector-user-menu-notifications" class="vector-menu mw-portlet emptyPortlet" > <div class="vector-menu-content"> <ul class="vector-menu-content-list"> </ul> </div> </div> <div id="p-vector-user-menu-overflow" class="vector-menu mw-portlet" > <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="pt-sitesupport-2" class="user-links-collapsible-item mw-list-item user-links-collapsible-item"><a data-mw="interface" href="//donate.wikimedia.org/wiki/Special:FundraiserRedirector?utm_source=donate&utm_medium=sidebar&utm_campaign=C13_br.wikipedia.org&uselang=br" class=""><span>Reiñ</span></a> </li> <li id="pt-createaccount-2" class="user-links-collapsible-item mw-list-item user-links-collapsible-item"><a data-mw="interface" href="/w/index.php?title=Dibar:Kroui%C3%B1Kont&returnto=Mas+atomek&returntoquery=oldid%3D377050" title="Erbedet eo deoc'h krouiñ ur gont ha kevreañ ; n'eo ket ret koulskoude." class=""><span>Krouiñ ur gont</span></a> </li> <li id="pt-login-2" class="user-links-collapsible-item mw-list-item user-links-collapsible-item"><a data-mw="interface" href="/w/index.php?title=Dibar:Kevrea%C3%B1Implijer&returnto=Mas+atomek&returntoquery=oldid%3D377050" title="Daoust ma n'eo ket ret, ec'h aliomp deoc'h kevreañ [o]" accesskey="o" class=""><span>Kevreañ</span></a> </li> </ul> </div> </div> </div> <div id="vector-user-links-dropdown" class="vector-dropdown vector-user-menu vector-button-flush-right vector-user-menu-logged-out" title="Muioc'h a zibaboù" > <input type="checkbox" id="vector-user-links-dropdown-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-vector-user-links-dropdown" class="vector-dropdown-checkbox " aria-label="Ostilhoù personel" > <label id="vector-user-links-dropdown-label" for="vector-user-links-dropdown-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-ellipsis mw-ui-icon-wikimedia-ellipsis"></span> <span class="vector-dropdown-label-text">Ostilhoù personel</span> </label> <div class="vector-dropdown-content"> <div id="p-personal" class="vector-menu mw-portlet mw-portlet-personal" title="Lañser implijer" > <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="pt-sitesupport" class="user-links-collapsible-item mw-list-item"><a href="//donate.wikimedia.org/wiki/Special:FundraiserRedirector?utm_source=donate&utm_medium=sidebar&utm_campaign=C13_br.wikipedia.org&uselang=br"><span>Reiñ</span></a></li><li id="pt-contribute" class="mw-list-item"><a href="/wiki/Dibar:Contribute"><span class="vector-icon mw-ui-icon-edit mw-ui-icon-wikimedia-edit"></span> <span>Kemer perzh</span></a></li><li id="pt-createaccount" class="user-links-collapsible-item mw-list-item"><a href="/w/index.php?title=Dibar:Kroui%C3%B1Kont&returnto=Mas+atomek&returntoquery=oldid%3D377050" title="Erbedet eo deoc'h krouiñ ur gont ha kevreañ ; n'eo ket ret koulskoude."><span class="vector-icon mw-ui-icon-userAdd mw-ui-icon-wikimedia-userAdd"></span> <span>Krouiñ ur gont</span></a></li><li id="pt-login" class="user-links-collapsible-item mw-list-item"><a href="/w/index.php?title=Dibar:Kevrea%C3%B1Implijer&returnto=Mas+atomek&returntoquery=oldid%3D377050" title="Daoust ma n'eo ket ret, ec'h aliomp deoc'h kevreañ [o]" accesskey="o"><span class="vector-icon mw-ui-icon-logIn mw-ui-icon-wikimedia-logIn"></span> <span>Kevreañ</span></a></li> </ul> </div> </div> <div id="p-user-menu-anon-editor" class="vector-menu mw-portlet mw-portlet-user-menu-anon-editor" > <div class="vector-menu-heading"> Pajennoù evit implijerien digevreet <a href="/wiki/Skoazell:Introduction" aria-label="Gouzout hiroc’h a-zivout degas kemmoù"><span>gouzout hiroc'h</span></a> </div> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="pt-anontalk" class="mw-list-item"><a href="/wiki/Dibar:MaC%27haozeadenno%C3%B9" title="Kaozeadennoù diwar-benn ar c'hemmoù graet adal ar chomlec'h-mañ [n]" accesskey="n"><span>Kaozeal</span></a></li> </ul> </div> </div> </div> </div> </nav> </div> </header> </div> <div class="mw-page-container"> <div class="mw-page-container-inner"> <div class="vector-sitenotice-container"> <div id="siteNotice"></div> </div> <div class="vector-column-start"> <div class="vector-main-menu-container"> <div id="mw-navigation"> <nav id="mw-panel" class="vector-main-menu-landmark" aria-label="Lec'hienn"> <div id="vector-main-menu-pinned-container" class="vector-pinned-container"> </div> </nav> </div> </div> <div class="vector-sticky-pinned-container"> <nav id="mw-panel-toc" aria-label="Taolenn" data-event-name="ui.sidebar-toc" class="mw-table-of-contents-container vector-toc-landmark"> <div id="vector-toc-pinned-container" class="vector-pinned-container"> <div id="vector-toc" class="vector-toc vector-pinnable-element"> <div class="vector-pinnable-header vector-toc-pinnable-header vector-pinnable-header-pinned" data-feature-name="toc-pinned" data-pinnable-element-id="vector-toc" > <h2 class="vector-pinnable-header-label">Taolenn</h2> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-pin-button" data-event-name="pinnable-header.vector-toc.pin">mont d’ar varrenn gostez</button> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-unpin-button" data-event-name="pinnable-header.vector-toc.unpin">kuzhat</button> </div> <ul class="vector-toc-contents" id="mw-panel-toc-list"> <li id="toc-mw-content-text" class="vector-toc-list-item vector-toc-level-1"> <a href="#" class="vector-toc-link"> <div class="vector-toc-text">Deroù</div> </a> </li> <li id="toc-Mas_atomek_an_izotopoù" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Mas_atomek_an_izotopoù"> <div class="vector-toc-text"> <span class="vector-toc-numb">1</span> <span>Mas atomek an izotopoù</span> </div> </a> <ul id="toc-Mas_atomek_an_izotopoù-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Mas_atomek_an_elfennoù" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Mas_atomek_an_elfennoù"> <div class="vector-toc-text"> <span class="vector-toc-numb">2</span> <span>Mas atomek an elfennoù</span> </div> </a> <ul id="toc-Mas_atomek_an_elfennoù-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-An_daveoù_mas_a-hed_an_istor" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#An_daveoù_mas_a-hed_an_istor"> <div class="vector-toc-text"> <span class="vector-toc-numb">3</span> <span>An daveoù mas a-hed an istor</span> </div> </a> <ul id="toc-An_daveoù_mas_a-hed_an_istor-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Gwelet_ivez" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Gwelet_ivez"> <div class="vector-toc-text"> <span class="vector-toc-numb">4</span> <span>Gwelet ivez</span> </div> </a> <ul id="toc-Gwelet_ivez-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Liammoù_diavaez" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Liammoù_diavaez"> <div class="vector-toc-text"> <span class="vector-toc-numb">5</span> <span>Liammoù diavaez</span> </div> </a> <ul id="toc-Liammoù_diavaez-sublist" class="vector-toc-list"> </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="Taolenn" 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="Gwintañ an daolenn" > <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">Gwintañ an daolenn</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">Mas atomek</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="Mont d’ur pennad en ur yezh all. 98 yezh a zo." > <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-98" 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">98 yezh</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/Atoommassa" title="Atoommassa – afrikaans" lang="af" hreflang="af" data-title="Atoommassa" data-language-autonym="Afrikaans" data-language-local-name="afrikaans" class="interlanguage-link-target"><span>Afrikaans</span></a></li><li class="interlanguage-link interwiki-an mw-list-item"><a href="https://an.wikipedia.org/wiki/Peso_atomico" title="Peso atomico – aragoneg" lang="an" hreflang="an" data-title="Peso atomico" data-language-autonym="Aragonés" data-language-local-name="aragoneg" class="interlanguage-link-target"><span>Aragonés</span></a></li><li class="interlanguage-link interwiki-ar mw-list-item"><a href="https://ar.wikipedia.org/wiki/%D9%83%D8%AA%D9%84%D8%A9_%D8%B0%D8%B1%D9%8A%D8%A9" title="كتلة ذرية – arabeg" lang="ar" hreflang="ar" data-title="كتلة ذرية" data-language-autonym="العربية" data-language-local-name="arabeg" 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%83%D8%AA%D9%84%D8%A9_%D8%AF%D8%B1%D9%8A%D8%A9" title="كتلة درية – arabeg Maroko" lang="ary" hreflang="ary" data-title="كتلة درية" data-language-autonym="الدارجة" data-language-local-name="arabeg Maroko" 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/Masa_at%C3%B3mica" title="Masa atómica – asturianeg" lang="ast" hreflang="ast" data-title="Masa atómica" data-language-autonym="Asturianu" data-language-local-name="asturianeg" class="interlanguage-link-target"><span>Asturianu</span></a></li><li class="interlanguage-link interwiki-az mw-list-item"><a href="https://az.wikipedia.org/wiki/Atom_k%C3%BCtl%C9%99si" title="Atom kütləsi – azerbaidjaneg" lang="az" hreflang="az" data-title="Atom kütləsi" data-language-autonym="Azərbaycanca" data-language-local-name="azerbaidjaneg" class="interlanguage-link-target"><span>Azərbaycanca</span></a></li><li class="interlanguage-link interwiki-ba mw-list-item"><a href="https://ba.wikipedia.org/wiki/%D0%90%D1%82%D0%BE%D0%BC_%D0%BC%D0%B0%D1%81%D1%81%D0%B0%D2%BB%D1%8B" title="Атом массаһы – bachkir" lang="ba" hreflang="ba" data-title="Атом массаһы" data-language-autonym="Башҡортса" data-language-local-name="bachkir" class="interlanguage-link-target"><span>Башҡортса</span></a></li><li class="interlanguage-link interwiki-be-x-old mw-list-item"><a href="https://be-tarask.wikipedia.org/wiki/%D0%90%D1%82%D0%B0%D0%BC%D0%BD%D0%B0%D1%8F_%D0%BC%D0%B0%D1%81%D0%B0" title="Атамная маса – Belarusian (Taraškievica orthography)" lang="be-tarask" hreflang="be-tarask" data-title="Атамная маса" data-language-autonym="Беларуская (тарашкевіца)" data-language-local-name="Belarusian (Taraškievica orthography)" class="interlanguage-link-target"><span>Беларуская (тарашкевіца)</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%BD%D0%B0_%D0%BC%D0%B0%D1%81%D0%B0" title="Атомна маса – bulgareg" lang="bg" hreflang="bg" data-title="Атомна маса" data-language-autonym="Български" data-language-local-name="bulgareg" 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%AD%E0%A6%B0" title="পারমাণবিক ভর – bengali" lang="bn" hreflang="bn" data-title="পারমাণবিক ভর" data-language-autonym="বাংলা" data-language-local-name="bengali" class="interlanguage-link-target"><span>বাংলা</span></a></li><li class="interlanguage-link interwiki-bs mw-list-item"><a href="https://bs.wikipedia.org/wiki/Atomska_masa" title="Atomska masa – bosneg" lang="bs" hreflang="bs" data-title="Atomska masa" data-language-autonym="Bosanski" data-language-local-name="bosneg" 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/Massa_at%C3%B2mica" title="Massa atòmica – katalaneg" lang="ca" hreflang="ca" data-title="Massa atòmica" data-language-autonym="Català" data-language-local-name="katalaneg" class="interlanguage-link-target"><span>Català</span></a></li><li class="interlanguage-link interwiki-ckb mw-list-item"><a href="https://ckb.wikipedia.org/wiki/%DA%A9%DB%8E%D8%B4%DB%8C_%D8%A6%DB%95%D8%AA%DB%86%D9%85%DB%8C" title="کێشی ئەتۆمی – kurdeg sorani" lang="ckb" hreflang="ckb" data-title="کێشی ئەتۆمی" data-language-autonym="کوردی" data-language-local-name="kurdeg 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/Relativn%C3%AD_atomov%C3%A1_hmotnost" title="Relativní atomová hmotnost – tchekeg" lang="cs" hreflang="cs" data-title="Relativní atomová hmotnost" data-language-autonym="Čeština" data-language-local-name="tchekeg" class="interlanguage-link-target"><span>Čeština</span></a></li><li class="interlanguage-link interwiki-da mw-list-item"><a href="https://da.wikipedia.org/wiki/Atomv%C3%A6gt" title="Atomvægt – daneg" lang="da" hreflang="da" data-title="Atomvægt" data-language-autonym="Dansk" data-language-local-name="daneg" 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/Atommasse" title="Atommasse – alamaneg" lang="de" hreflang="de" data-title="Atommasse" data-language-autonym="Deutsch" data-language-local-name="alamaneg" 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_%CE%B2%CE%AC%CF%81%CE%BF%CF%82" title="Ατομικό βάρος – gresianeg" lang="el" hreflang="el" data-title="Ατομικό βάρος" data-language-autonym="Ελληνικά" data-language-local-name="gresianeg" 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_mass" title="Atomic mass – saozneg" lang="en" hreflang="en" data-title="Atomic mass" data-language-autonym="English" data-language-local-name="saozneg" 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/Atompezo" title="Atompezo – esperanteg" lang="eo" hreflang="eo" data-title="Atompezo" data-language-autonym="Esperanto" data-language-local-name="esperanteg" 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/Masa_at%C3%B3mica" title="Masa atómica – spagnoleg" lang="es" hreflang="es" data-title="Masa atómica" data-language-autonym="Español" data-language-local-name="spagnoleg" 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/Aatommass" title="Aatommass – estoneg" lang="et" hreflang="et" data-title="Aatommass" data-language-autonym="Eesti" data-language-local-name="estoneg" 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/Masa_atomiko" title="Masa atomiko – euskareg" lang="eu" hreflang="eu" data-title="Masa atomiko" data-language-autonym="Euskara" data-language-local-name="euskareg" 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%AC%D8%B1%D9%85_%D8%A7%D8%AA%D9%85%DB%8C" title="جرم اتمی – perseg" lang="fa" hreflang="fa" data-title="جرم اتمی" data-language-autonym="فارسی" data-language-local-name="perseg" 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/Atomimassa" title="Atomimassa – finneg" lang="fi" hreflang="fi" data-title="Atomimassa" data-language-autonym="Suomi" data-language-local-name="finneg" class="interlanguage-link-target"><span>Suomi</span></a></li><li class="interlanguage-link interwiki-fr mw-list-item"><a href="https://fr.wikipedia.org/wiki/Masse_atomique" title="Masse atomique – galleg" lang="fr" hreflang="fr" data-title="Masse atomique" data-language-autonym="Français" data-language-local-name="galleg" class="interlanguage-link-target"><span>Français</span></a></li><li class="interlanguage-link interwiki-fur mw-list-item"><a href="https://fur.wikipedia.org/wiki/Masse_atomiche" title="Masse atomiche – frioulaneg" lang="fur" hreflang="fur" data-title="Masse atomiche" data-language-autonym="Furlan" data-language-local-name="frioulaneg" 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/Atoommassa" title="Atoommassa – frizeg ar Cʼhornôg" lang="fy" hreflang="fy" data-title="Atoommassa" data-language-autonym="Frysk" data-language-local-name="frizeg ar Cʼhornôg" 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/Mais_adamhach" title="Mais adamhach – iwerzhoneg" lang="ga" hreflang="ga" data-title="Mais adamhach" data-language-autonym="Gaeilge" data-language-local-name="iwerzhoneg" class="interlanguage-link-target"><span>Gaeilge</span></a></li><li class="interlanguage-link interwiki-gl mw-list-item"><a href="https://gl.wikipedia.org/wiki/Masa_at%C3%B3mica" title="Masa atómica – galizeg" lang="gl" hreflang="gl" data-title="Masa atómica" data-language-autonym="Galego" data-language-local-name="galizeg" class="interlanguage-link-target"><span>Galego</span></a></li><li class="interlanguage-link interwiki-he mw-list-item"><a href="https://he.wikipedia.org/wiki/%D7%9E%D7%A9%D7%A7%D7%9C_%D7%90%D7%98%D7%95%D7%9E%D7%99" title="משקל אטומי – hebraeg" lang="he" hreflang="he" data-title="משקל אטומי" data-language-autonym="עברית" data-language-local-name="hebraeg" 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%A6%E0%A5%8D%E0%A4%B0%E0%A4%B5%E0%A5%8D%E0%A4%AF%E0%A4%AE%E0%A4%BE%E0%A4%A8" title="परमाणु द्रव्यमान – hindi" lang="hi" hreflang="hi" data-title="परमाणु द्रव्यमान" 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_mass" title="Atomic mass – Fiji Hindi" lang="hif" hreflang="hif" data-title="Atomic mass" data-language-autonym="Fiji Hindi" data-language-local-name="Fiji Hindi" 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/Atomska_masa" title="Atomska masa – kroateg" lang="hr" hreflang="hr" data-title="Atomska masa" data-language-autonym="Hrvatski" data-language-local-name="kroateg" 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/Mas_atomik" title="Mas atomik – haitieg" lang="ht" hreflang="ht" data-title="Mas atomik" data-language-autonym="Kreyòl ayisyen" data-language-local-name="haitieg" 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/Atomt%C3%B6meg" title="Atomtömeg – hungareg" lang="hu" hreflang="hu" data-title="Atomtömeg" data-language-autonym="Magyar" data-language-local-name="hungareg" 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%B5%D5%AB%D5%B6_%D5%A6%D5%A1%D5%B6%D5%A3%D5%BE%D5%A1%D5%AE" title="Ատոմային զանգված – armenianeg" lang="hy" hreflang="hy" data-title="Ատոմային զանգված" data-language-autonym="Հայերեն" data-language-local-name="armenianeg" class="interlanguage-link-target"><span>Հայերեն</span></a></li><li class="interlanguage-link interwiki-id mw-list-item"><a href="https://id.wikipedia.org/wiki/Massa_atom" title="Massa atom – indonezeg" lang="id" hreflang="id" data-title="Massa atom" data-language-autonym="Bahasa Indonesia" data-language-local-name="indonezeg" class="interlanguage-link-target"><span>Bahasa Indonesia</span></a></li><li class="interlanguage-link interwiki-is mw-list-item"><a href="https://is.wikipedia.org/wiki/At%C3%B3mmassi" title="Atómmassi – islandeg" lang="is" hreflang="is" data-title="Atómmassi" data-language-autonym="Íslenska" data-language-local-name="islandeg" 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/Peso_atomico" title="Peso atomico – italianeg" lang="it" hreflang="it" data-title="Peso atomico" data-language-autonym="Italiano" data-language-local-name="italianeg" 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%E9%87%8F" title="原子量 – japaneg" lang="ja" hreflang="ja" data-title="原子量" data-language-autonym="日本語" data-language-local-name="japaneg" class="interlanguage-link-target"><span>日本語</span></a></li><li class="interlanguage-link interwiki-jbo mw-list-item"><a href="https://jbo.wikipedia.org/wiki/na%27orteryratni" title="na'orteryratni – lojban" lang="jbo" hreflang="jbo" data-title="na'orteryratni" data-language-autonym="La .lojban." data-language-local-name="lojban" class="interlanguage-link-target"><span>La .lojban.</span></a></li><li class="interlanguage-link interwiki-jv mw-list-item"><a href="https://jv.wikipedia.org/wiki/Massa_atom" title="Massa atom – javaneg" lang="jv" hreflang="jv" data-title="Massa atom" data-language-autonym="Jawa" data-language-local-name="javaneg" 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%9B%E1%83%90%E1%83%A1%E1%83%90" title="ატომური მასა – jorjianeg" lang="ka" hreflang="ka" data-title="ატომური მასა" data-language-autonym="ქართული" data-language-local-name="jorjianeg" 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/Takura_tabelkamt" title="Takura tabelkamt – kabileg" lang="kab" hreflang="kab" data-title="Takura tabelkamt" data-language-autonym="Taqbaylit" data-language-local-name="kabileg" 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%BC%D0%B0%D1%81%D1%81%D0%B0" title="Атомдық масса – kazak" lang="kk" hreflang="kk" data-title="Атомдық масса" data-language-autonym="Қазақша" data-language-local-name="kazak" class="interlanguage-link-target"><span>Қазақша</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_%EC%A7%88%EB%9F%89" title="원자 질량 – koreaneg" lang="ko" hreflang="ko" data-title="원자 질량" data-language-autonym="한국어" data-language-local-name="koreaneg" class="interlanguage-link-target"><span>한국어</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%BC%D0%B0%D1%81%D1%81%D0%B0" title="Атомдук масса – kirgiz" lang="ky" hreflang="ky" data-title="Атомдук масса" data-language-autonym="Кыргызча" data-language-local-name="kirgiz" 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/Massa_atomica" title="Massa atomica – latin" lang="la" hreflang="la" data-title="Massa atomica" 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/Atommass" title="Atommass – luksembourgeg" lang="lb" hreflang="lb" data-title="Atommass" data-language-autonym="Lëtzebuergesch" data-language-local-name="luksembourgeg" 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/Atoomgewich" title="Atoomgewich – limbourgeg" lang="li" hreflang="li" data-title="Atoomgewich" data-language-autonym="Limburgs" data-language-local-name="limbourgeg" class="interlanguage-link-target"><span>Limburgs</span></a></li><li class="interlanguage-link interwiki-lmo mw-list-item"><a href="https://lmo.wikipedia.org/wiki/M%C3%A0ssa_at%C3%B2mica" title="Màssa atòmica – Lombard" lang="lmo" hreflang="lmo" data-title="Màssa atòmica" 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/Atomin%C4%97_mas%C4%97" title="Atominė masė – lituaneg" lang="lt" hreflang="lt" data-title="Atominė masė" data-language-autonym="Lietuvių" data-language-local-name="lituaneg" 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/Atommasa" title="Atommasa – latvieg" lang="lv" hreflang="lv" data-title="Atommasa" data-language-autonym="Latviešu" data-language-local-name="latvieg" 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%B0_%D0%BC%D0%B0%D1%81%D0%B0" title="Атомска маса – makedoneg" lang="mk" hreflang="mk" data-title="Атомска маса" data-language-autonym="Македонски" data-language-local-name="makedoneg" class="interlanguage-link-target"><span>Македонски</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_%D0%BC%D0%B0%D1%81%D1%81" title="Атом масс – mongoleg" lang="mn" hreflang="mn" data-title="Атом масс" data-language-autonym="Монгол" data-language-local-name="mongoleg" 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%AD%E0%A4%BE%E0%A4%B0" title="अणुभार – marathi" lang="mr" hreflang="mr" data-title="अणुभार" 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/Jisim_atom" title="Jisim atom – malayseg" lang="ms" hreflang="ms" data-title="Jisim atom" data-language-autonym="Bahasa Melayu" data-language-local-name="malayseg" class="interlanguage-link-target"><span>Bahasa Melayu</span></a></li><li class="interlanguage-link interwiki-nds mw-list-item"><a href="https://nds.wikipedia.org/wiki/Atommass" title="Atommass – alamaneg izel" lang="nds" hreflang="nds" data-title="Atommass" data-language-autonym="Plattdüütsch" data-language-local-name="alamaneg izel" class="interlanguage-link-target"><span>Plattdüütsch</span></a></li><li class="interlanguage-link interwiki-nl mw-list-item"><a href="https://nl.wikipedia.org/wiki/Atoommassa" title="Atoommassa – nederlandeg" lang="nl" hreflang="nl" data-title="Atoommassa" data-language-autonym="Nederlands" data-language-local-name="nederlandeg" 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/Atommasse" title="Atommasse – norvegeg nynorsk" lang="nn" hreflang="nn" data-title="Atommasse" data-language-autonym="Norsk nynorsk" data-language-local-name="norvegeg 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/Atommasse" title="Atommasse – norvegeg bokmål" lang="nb" hreflang="nb" data-title="Atommasse" data-language-autonym="Norsk bokmål" data-language-local-name="norvegeg bokmål" class="interlanguage-link-target"><span>Norsk bokmål</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%A8%B5%E0%A9%80_%E0%A8%AD%E0%A8%BE%E0%A8%B0" title="ਪਰਮਾਣਵੀ ਭਾਰ – punjabi" lang="pa" hreflang="pa" data-title="ਪਰਮਾਣਵੀ ਭਾਰ" data-language-autonym="ਪੰਜਾਬੀ" data-language-local-name="punjabi" 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/Masa_atomowa" title="Masa atomowa – poloneg" lang="pl" hreflang="pl" data-title="Masa atomowa" data-language-autonym="Polski" data-language-local-name="poloneg" class="interlanguage-link-target"><span>Polski</span></a></li><li class="interlanguage-link interwiki-pms mw-list-item"><a href="https://pms.wikipedia.org/wiki/Massa_at%C3%B2mica" title="Massa atòmica – piemonteg" lang="pms" hreflang="pms" data-title="Massa atòmica" data-language-autonym="Piemontèis" data-language-local-name="piemonteg" class="interlanguage-link-target"><span>Piemontèis</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_%D8%A8%DA%BE%D8%A7%D8%B1" title="ایٹمی بھار – Western Punjabi" lang="pnb" hreflang="pnb" data-title="ایٹمی بھار" data-language-autonym="پنجابی" data-language-local-name="Western Punjabi" class="interlanguage-link-target"><span>پنجابی</span></a></li><li class="interlanguage-link interwiki-pt mw-list-item"><a href="https://pt.wikipedia.org/wiki/Massa_at%C3%B4mica" title="Massa atômica – portugaleg" lang="pt" hreflang="pt" data-title="Massa atômica" data-language-autonym="Português" data-language-local-name="portugaleg" 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_wisnu" title="Iñuku wisnu – kechuaeg" lang="qu" hreflang="qu" data-title="Iñuku wisnu" data-language-autonym="Runa Simi" data-language-local-name="kechuaeg" 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/Mas%C4%83_atomic%C4%83" title="Masă atomică – roumaneg" lang="ro" hreflang="ro" data-title="Masă atomică" data-language-autonym="Română" data-language-local-name="roumaneg" 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%90%D1%82%D0%BE%D0%BC%D0%BD%D0%B0%D1%8F_%D0%BC%D0%B0%D1%81%D1%81%D0%B0" title="Атомная масса – rusianeg" lang="ru" hreflang="ru" data-title="Атомная масса" data-language-autonym="Русский" data-language-local-name="rusianeg" 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%90%D1%82%D0%BE%D0%BC%D0%BE%D0%B2%D0%B0_%D0%BC%D0%B0%D1%81%D0%B0" title="Атомова маса – Rusyn" lang="rue" hreflang="rue" data-title="Атомова маса" data-language-autonym="Русиньскый" data-language-local-name="Rusyn" class="interlanguage-link-target"><span>Русиньскый</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%85%D8%A7%D9%8A%D9%88" title="ايٽمي مايو – sindhi" lang="sd" hreflang="sd" data-title="ايٽمي مايو" 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/Atomska_masa" title="Atomska masa – serb-kroateg" lang="sh" hreflang="sh" data-title="Atomska masa" data-language-autonym="Srpskohrvatski / српскохрватски" data-language-local-name="serb-kroateg" 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%B7%83%E0%B7%8A%E0%B6%9A%E0%B6%B1%E0%B7%8A%E0%B6%B0%E0%B6%BA" title="පරමාණුක ස්කන්ධය – singhaleg" lang="si" hreflang="si" data-title="පරමාණුක ස්කන්ධය" data-language-autonym="සිංහල" data-language-local-name="singhaleg" 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_mass" title="Atomic mass – Simple English" lang="en-simple" hreflang="en-simple" data-title="Atomic mass" 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/At%C3%B3mov%C3%A1_hmotnos%C5%A5" title="Atómová hmotnosť – slovakeg" lang="sk" hreflang="sk" data-title="Atómová hmotnosť" data-language-autonym="Slovenčina" data-language-local-name="slovakeg" 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/Atomska_te%C5%BEa" title="Atomska teža – sloveneg" lang="sl" hreflang="sl" data-title="Atomska teža" data-language-autonym="Slovenščina" data-language-local-name="sloveneg" class="interlanguage-link-target"><span>Slovenščina</span></a></li><li class="interlanguage-link interwiki-so mw-list-item"><a href="https://so.wikipedia.org/wiki/Cuf_atam" title="Cuf atam – somali" lang="so" hreflang="so" data-title="Cuf 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/Masa_atomike" title="Masa atomike – albaneg" lang="sq" hreflang="sq" data-title="Masa atomike" data-language-autonym="Shqip" data-language-local-name="albaneg" 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%A0%D0%B5%D0%BB%D0%B0%D1%82%D0%B8%D0%B2%D0%BD%D0%B0_%D0%B0%D1%82%D0%BE%D0%BC%D1%81%D0%BA%D0%B0_%D0%BC%D0%B0%D1%81%D0%B0" title="Релативна атомска маса – serbeg" lang="sr" hreflang="sr" data-title="Релативна атомска маса" data-language-autonym="Српски / srpski" data-language-local-name="serbeg" 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/Atommasse" title="Atommasse – Saterland Frisian" lang="stq" hreflang="stq" data-title="Atommasse" data-language-autonym="Seeltersk" data-language-local-name="Saterland Frisian" 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/Massa_atom" title="Massa atom – sundaneg" lang="su" hreflang="su" data-title="Massa atom" data-language-autonym="Sunda" data-language-local-name="sundaneg" 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/Atommassa" title="Atommassa – svedeg" lang="sv" hreflang="sv" data-title="Atommassa" data-language-autonym="Svenska" data-language-local-name="svedeg" 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/Uzani_atomia" title="Uzani atomia – swahili" lang="sw" hreflang="sw" data-title="Uzani 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%A8%E0%AE%BF%E0%AE%B1%E0%AF%88" title="அணு நிறை – tamileg" lang="ta" hreflang="ta" data-title="அணு நிறை" data-language-autonym="தமிழ்" data-language-local-name="tamileg" class="interlanguage-link-target"><span>தமிழ்</span></a></li><li class="interlanguage-link interwiki-tg mw-list-item"><a href="https://tg.wikipedia.org/wiki/%D0%9C%D0%B0%D1%81%D1%81%D0%B0%D0%B8_%D0%B0%D1%82%D0%BE%D0%BC%D3%A3" title="Массаи атомӣ – tadjik" lang="tg" hreflang="tg" data-title="Массаи 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%B8%A1%E0%B8%A7%E0%B8%A5%E0%B8%AD%E0%B8%B0%E0%B8%95%E0%B8%AD%E0%B8%A1" title="มวลอะตอม – thai" lang="th" hreflang="th" data-title="มวลอะตอม" data-language-autonym="ไทย" data-language-local-name="thai" 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_masa" title="Atomikong masa – tagalog" lang="tl" hreflang="tl" data-title="Atomikong masa" 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_k%C3%BCtlesi" title="Atom kütlesi – turkeg" lang="tr" hreflang="tr" data-title="Atom kütlesi" data-language-autonym="Türkçe" data-language-local-name="turkeg" 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%B0_%D0%BC%D0%B0%D1%81%D0%B0" title="Атомна маса – ukraineg" lang="uk" hreflang="uk" data-title="Атомна маса" data-language-autonym="Українська" data-language-local-name="ukraineg" 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_%DA%A9%D9%85%DB%8C%D8%AA" title="جوہری کمیت – ourdou" lang="ur" hreflang="ur" data-title="جوہری کمیت" 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_massasi" title="Atom massasi – ouzbekeg" lang="uz" hreflang="uz" data-title="Atom massasi" data-language-autonym="Oʻzbekcha / ўзбекча" data-language-local-name="ouzbekeg" class="interlanguage-link-target"><span>Oʻzbekcha / ўзбекча</span></a></li><li class="interlanguage-link interwiki-vi mw-list-item"><a href="https://vi.wikipedia.org/wiki/Nguy%C3%AAn_t%E1%BB%AD_l%C6%B0%E1%BB%A3ng" title="Nguyên tử lượng – vietnameg" lang="vi" hreflang="vi" data-title="Nguyên tử lượng" data-language-autonym="Tiếng Việt" data-language-local-name="vietnameg" class="interlanguage-link-target"><span>Tiếng Việt</span></a></li><li class="interlanguage-link interwiki-war mw-list-item"><a href="https://war.wikipedia.org/wiki/Masa_atomika" title="Masa atomika – waray" lang="war" hreflang="war" data-title="Masa atomika" 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%E9%87%8F" title="原子量 – sinaeg Wu" lang="wuu" hreflang="wuu" data-title="原子量" data-language-autonym="吴语" data-language-local-name="sinaeg Wu" class="interlanguage-link-target"><span>吴语</span></a></li><li class="interlanguage-link interwiki-yo mw-list-item"><a href="https://yo.wikipedia.org/wiki/%C3%8Cw%C3%BAwo_%C3%A1t%E1%BB%8D%CC%80m%C3%B9" title="Ìwúwo átọ̀mù – yorouba" lang="yo" hreflang="yo" data-title="Ìwúwo átọ̀mù" data-language-autonym="Yorùbá" data-language-local-name="yorouba" 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%E9%87%8F" title="原子量 – sinaeg" lang="zh" hreflang="zh" data-title="原子量" data-language-autonym="中文" data-language-local-name="sinaeg" class="interlanguage-link-target"><span>中文</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_chit-li%C5%8Dng" title="Goân-chú chit-liōng – sinaeg Min Nan" lang="nan" hreflang="nan" data-title="Goân-chú chit-liōng" data-language-autonym="閩南語 / Bân-lâm-gú" data-language-local-name="sinaeg Min Nan" 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%E8%B3%AA%E9%87%8F" title="原子質量 – kantoneg" lang="yue" hreflang="yue" data-title="原子質量" data-language-autonym="粵語" data-language-local-name="kantoneg" class="interlanguage-link-target"><span>粵語</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/Q3840065#sitelinks-wikipedia" title="Kemmañ al liammoù etreyezhel" class="wbc-editpage">Kemmañ al liammoù</a></span></div> </div> </div> </div> </header> <div class="vector-page-toolbar"> <div class="vector-page-toolbar-container"> <div id="left-navigation"> <nav aria-label="Esaouennoù anv"> <div id="p-associated-pages" class="vector-menu vector-menu-tabs mw-portlet mw-portlet-associated-pages" > <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="ca-nstab-main" class="selected vector-tab-noicon mw-list-item"><a href="/wiki/Mas_atomek" title="Gwelet ar pennad [c]" accesskey="c"><span>Pajenn</span></a></li><li id="ca-talk" class="new vector-tab-noicon mw-list-item"><a href="/w/index.php?title=Kaozeal:Mas_atomek&action=edit&redlink=1" rel="discussion" class="new" title="Kaozeadennoù diwar-benn ar pennad (n'eus ket eus ar bajenn-mañ) [t]" accesskey="t"><span>Kaozeadenn</span></a></li> </ul> </div> </div> <div id="vector-variants-dropdown" class="vector-dropdown emptyPortlet" > <input type="checkbox" id="vector-variants-dropdown-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-vector-variants-dropdown" class="vector-dropdown-checkbox " aria-label="Kemmañ adstumm yezh" > <label id="vector-variants-dropdown-label" for="vector-variants-dropdown-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet" aria-hidden="true" ><span class="vector-dropdown-label-text">brezhoneg</span> </label> <div class="vector-dropdown-content"> <div id="p-variants" class="vector-menu mw-portlet mw-portlet-variants emptyPortlet" > <div class="vector-menu-content"> <ul class="vector-menu-content-list"> </ul> </div> </div> </div> </div> </nav> </div> <div id="right-navigation" class="vector-collapsible"> <nav aria-label="Gweladennoù"> <div id="p-views" class="vector-menu vector-menu-tabs mw-portlet mw-portlet-views" > <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="ca-view" class="selected vector-tab-noicon mw-list-item"><a href="/wiki/Mas_atomek"><span>Lenn</span></a></li><li id="ca-ve-edit" class="vector-tab-noicon mw-list-item"><a href="/w/index.php?title=Mas_atomek&oldid=377050&veaction=edit" title="Kemmañ ar bajenn-mañ [v]" accesskey="v"><span>Kemmañ</span></a></li><li id="ca-edit" class="collapsible vector-tab-noicon mw-list-item"><a href="/w/index.php?title=Mas_atomek&action=edit&oldid=377050" title="Kemmañ kod mammennoù ar bajenn-mañ [e]" accesskey="e"><span>Kemmañ ar vammenn</span></a></li><li id="ca-history" class="vector-tab-noicon mw-list-item"><a href="/w/index.php?title=Mas_atomek&action=history" title="Stummoù kozh ar bajenn-mañ gant an aozerien anezhi. [h]" accesskey="h"><span>Gwelet an istor</span></a></li> </ul> </div> </div> </nav> <nav class="vector-page-tools-landmark" aria-label="Ostilhoù evit ar pajennoù"> <div id="vector-page-tools-dropdown" class="vector-dropdown vector-page-tools-dropdown" > <input type="checkbox" id="vector-page-tools-dropdown-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-vector-page-tools-dropdown" class="vector-dropdown-checkbox " aria-label="Ostilhoù" > <label id="vector-page-tools-dropdown-label" for="vector-page-tools-dropdown-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet" aria-hidden="true" ><span class="vector-dropdown-label-text">Ostilhoù</span> </label> <div class="vector-dropdown-content"> <div id="vector-page-tools-unpinned-container" class="vector-unpinned-container"> <div id="vector-page-tools" class="vector-page-tools vector-pinnable-element"> <div class="vector-pinnable-header vector-page-tools-pinnable-header vector-pinnable-header-unpinned" data-feature-name="page-tools-pinned" data-pinnable-element-id="vector-page-tools" data-pinned-container-id="vector-page-tools-pinned-container" data-unpinned-container-id="vector-page-tools-unpinned-container" > <div class="vector-pinnable-header-label">Ostilhoù</div> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-pin-button" data-event-name="pinnable-header.vector-page-tools.pin">mont d’ar varrenn gostez</button> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-unpin-button" data-event-name="pinnable-header.vector-page-tools.unpin">kuzhat</button> </div> <div id="p-cactions" class="vector-menu mw-portlet mw-portlet-cactions emptyPortlet vector-has-collapsible-items" title="Muioc'h a zibarzhioù" > <div class="vector-menu-heading"> Oberoù </div> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="ca-more-view" class="selected vector-more-collapsible-item mw-list-item"><a href="/wiki/Mas_atomek"><span>Lenn</span></a></li><li id="ca-more-ve-edit" class="vector-more-collapsible-item mw-list-item"><a href="/w/index.php?title=Mas_atomek&oldid=377050&veaction=edit" title="Kemmañ ar bajenn-mañ [v]" accesskey="v"><span>Kemmañ</span></a></li><li id="ca-more-edit" class="collapsible vector-more-collapsible-item mw-list-item"><a href="/w/index.php?title=Mas_atomek&action=edit&oldid=377050" title="Kemmañ kod mammennoù ar bajenn-mañ [e]" accesskey="e"><span>Kemmañ ar vammenn</span></a></li><li id="ca-more-history" class="vector-more-collapsible-item mw-list-item"><a href="/w/index.php?title=Mas_atomek&action=history"><span>Gwelet an istor</span></a></li> </ul> </div> </div> <div id="p-tb" class="vector-menu mw-portlet mw-portlet-tb" > <div class="vector-menu-heading"> Hollek </div> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="t-whatlinkshere" class="mw-list-item"><a href="/wiki/Dibar:PetraGasBetekAma%C3%B1/Mas_atomek" title="Roll ar pajennoù liammet ouzh ar bajenn-mañ [j]" accesskey="j"><span>Pajennoù liammet</span></a></li><li id="t-recentchangeslinked" class="mw-list-item"><a href="/wiki/Dibar:Kemmo%C3%B9Kar/Mas_atomek" rel="nofollow" title="Roll ar c'hemmoù diwezhañ war ar pajennoù liammet ouzh ar bajenn-mañ [k]" accesskey="k"><span>Heuliañ ar pajennoù liammet</span></a></li><li id="t-upload" class="mw-list-item"><a href="//commons.wikimedia.org/wiki/Special:UploadWizard?uselang=br" title="Enporzhiañ ur skeudenn pe ur restr media war ar servijer [u]" accesskey="u"><span>Kargañ war ar servijer</span></a></li><li id="t-specialpages" class="mw-list-item"><a href="/wiki/Dibar:Pajenno%C3%B9Dibar" title="Roll an holl bajennoù dibar [q]" accesskey="q"><span>Pajennoù dibar</span></a></li><li id="t-permalink" class="mw-list-item"><a href="/w/index.php?title=Mas_atomek&oldid=377050" title="Liamm padus war-du ar stumm-mañ eus ar bajenn-mañ"><span>Chomlec'h ar stumm-mañ</span></a></li><li id="t-info" class="mw-list-item"><a href="/w/index.php?title=Mas_atomek&action=info" title="Titouroù ouzhpenn a-zivout ar bajenn-mañ"><span>Titouroù ar bajenn</span></a></li><li id="t-cite" class="mw-list-item"><a href="/w/index.php?title=Dibar:Menegi%C3%B1&page=Mas_atomek&id=377050&wpFormIdentifier=titleform" title="Titouroù war an doare da venegiñ ar bajenn-mañ"><span>Menegiñ ar pennad-mañ</span></a></li><li id="t-urlshortener" class="mw-list-item"><a href="/w/index.php?title=Dibar:UrlShortener&url=https%3A%2F%2Fbr.wikipedia.org%2Fw%2Findex.php%3Ftitle%3DMas_atomek%26oldid%3D377050"><span>Kaout URL berraet</span></a></li><li id="t-urlshortener-qrcode" class="mw-list-item"><a href="/w/index.php?title=Dibar:QrCode&url=https%3A%2F%2Fbr.wikipedia.org%2Fw%2Findex.php%3Ftitle%3DMas_atomek%26oldid%3D377050"><span>Pellgargañ kod QR</span></a></li> </ul> </div> </div> <div id="p-coll-print_export" class="vector-menu mw-portlet mw-portlet-coll-print_export" > <div class="vector-menu-heading"> Moullañ/ezporzhiañ </div> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="coll-create_a_book" class="mw-list-item"><a href="/w/index.php?title=Dibar:Dastumad&bookcmd=book_creator&referer=Mas+atomek"><span>Sevel ul levr</span></a></li><li id="t-print" class="mw-list-item"><a href="/w/index.php?title=Mas_atomek&printable=yes" title="Stumm moulladus ar bajenn-mañ [p]" accesskey="p"><span>Stumm da voullañ</span></a></li> </ul> </div> </div> <div id="p-wikibase-otherprojects" class="vector-menu mw-portlet mw-portlet-wikibase-otherprojects" > <div class="vector-menu-heading"> E raktresoù all </div> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="t-wikibase" class="wb-otherproject-link wb-otherproject-wikibase-dataitem mw-list-item"><a href="https://www.wikidata.org/wiki/Special:EntityPage/Q3840065" title="Liamm war-zu elfenn gevreet kavlec'h ar roadennoù [g]" accesskey="g"><span>Elfenn Wikidata</span></a></li> </ul> </div> </div> </div> </div> </div> </div> </nav> </div> </div> </div> <div class="vector-column-end"> <div class="vector-sticky-pinned-container"> <nav class="vector-page-tools-landmark" aria-label="Ostilhoù evit ar pajennoù"> <div id="vector-page-tools-pinned-container" class="vector-pinned-container"> </div> </nav> <nav class="vector-appearance-landmark" aria-label="Neuz"> <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">Neuz</div> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-pin-button" data-event-name="pinnable-header.vector-appearance.pin">mont d’ar varrenn gostez</button> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-unpin-button" data-event-name="pinnable-header.vector-appearance.unpin">kuzhat</button> </div> </div> </div> </nav> </div> </div> <div id="bodyContent" class="vector-body" aria-labelledby="firstHeading" data-mw-ve-target-container> <div class="vector-body-before-content"> <div class="mw-indicators"> </div> <div id="siteSub" class="noprint">Eus Wikipedia</div> </div> <div id="contentSub"><div id="mw-content-subtitle"><div class="cdx-message cdx-message--block cdx-message--warning mw-revision"><span class="cdx-message__icon"></span><div class="cdx-message__content"><div id="mw-revision-info">Stumm eus an 3 Gwe 2008 da 16:53 gant <a href="/wiki/Implijer:SieBot" class="mw-userlink" title="Implijer:SieBot" data-mw-revid="377050"><bdi>SieBot</bdi></a> <span class="mw-usertoollinks">(<a href="/wiki/Kaozeadenn_Implijer:SieBot" class="mw-usertoollinks-talk" title="Kaozeadenn Implijer:SieBot">kaozeal</a> | <a href="/wiki/Dibar:Degasadenno%C3%B9/SieBot" class="mw-usertoollinks-contribs" title="Dibar:Degasadennoù/SieBot">degasadennoù</a>)</span> <span class="comment">(Robot ouzhpennet: <a href="https://gl.wikipedia.org/wiki/Masa_at%C3%B3mica" class="extiw" title="gl:Masa atómica">gl:Masa atómica</a>)</span></div><div id="mw-revision-nav">(<a href="/w/index.php?title=Mas_atomek&diff=prev&oldid=377050" title="Mas atomek">diforc'h</a>) <a href="/w/index.php?title=Mas_atomek&direction=prev&oldid=377050" title="Mas atomek">← Stumm kent</a> | <a href="/wiki/Mas_atomek" title="Mas atomek">Gwelet ar stumm red</a> (<a href="/w/index.php?title=Mas_atomek&diff=cur&oldid=377050" title="Mas atomek">diforc'h</a>) | <a href="/w/index.php?title=Mas_atomek&direction=next&oldid=377050" title="Mas atomek">Stumm war-lerc'h →</a> (<a href="/w/index.php?title=Mas_atomek&diff=next&oldid=377050" title="Mas atomek">diforc'h</a>)</div></div></div></div></div> <div id="mw-content-text" class="mw-body-content"><div class="mw-content-ltr mw-parser-output" lang="br" dir="ltr"><div style="border:1px solid #E47B10; border-left-width:10px; padding:6px; margin:3px 10% 10px 10%; box-shadow:3px 3px 3px #CCC;"><div style="margin:0 10px;float: left;"><span typeof="mw:File"><span><img src="//upload.wikimedia.org/wikipedia/commons/thumb/2/21/Puzzle_stub_cropped.png/36px-Puzzle_stub_cropped.png" decoding="async" width="36" height="36" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/2/21/Puzzle_stub_cropped.png/54px-Puzzle_stub_cropped.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/2/21/Puzzle_stub_cropped.png/72px-Puzzle_stub_cropped.png 2x" data-file-width="150" data-file-height="150" /></span></span></div> <b>Krogit e-barzh !</b><br />Un <a href="/wiki/Wikipedia:Skouerio%C3%B9_danvez_pennado%C3%B9" title="Wikipedia:Skouerioù danvez pennadoù">danvez pennad</a> eo ar pennad-mañ ha labour zo d'ober c'hoazh a-raok e beurechuiñ.<br />Gallout a rit <a href="/wiki/Wikipedia:Kavout_pe_klokaat_danvez_pennado%C3%B9" title="Wikipedia:Kavout pe klokaat danvez pennadoù">skoazellañ</a> Wikipedia dre <a class="external text" href="https://br.wikipedia.org/w/index.php?title=Mas_atomek&veaction=edit">glokaat anezhañ</a>. </div> <p><br /> </p> <meta property="mw:PageProp/toc" /> <div class="mw-heading mw-heading2"><h2 id="Mas_atomek_an_izotopoù"><span id="Mas_atomek_an_izotopo.C3.B9"></span>Mas atomek an izotopoù</h2></div> <p><b>Mas atomek</b> un <a href="/wiki/Izotop" title="Izotop">izotop</a> bennak eo <i>mas relativel</i> un <a href="/wiki/Atom" title="Atom">atom</a> eus an izotop-se e-keñver ar <a href="/wiki/Karbon" title="Karbon">c'harbon 12</a> a zo 12 e vas atomek dre dermenadur. Un niver hep ment eo. Tost a-walc'h eo ar mas atomek ouzh an niver a <a href="/wiki/Nukleon" title="Nukleon">nukleonoù</a> a zo e <a href="/wiki/Nukle%C3%BCs_(an_atomo%C3%B9)" title="Nukleüs (an atomoù)">nukleüs</a> an atom. N'eus nemet ar c'harbon-12 a zo kevatal e vas atomek d'e <a href="/wiki/Niver_mas" title="Niver mas">niver mas</a>. </p> <div class="mw-heading mw-heading2"><h2 id="Mas_atomek_an_elfennoù"><span id="Mas_atomek_an_elfenno.C3.B9"></span>Mas atomek an elfennoù</h2></div> <p><b>Mas atomek</b> un <a href="/wiki/Elfenn_gimiek" title="Elfenn gimiek">elfenn gimiek</a> bennak eo mas atomek keidennek holl izotopoù an elfenn-se. Pouezet e vez ar <a href="/w/index.php?title=Keidenn&action=edit&redlink=1" class="new" title="Keidenn (n'eus ket eus ar bajenn-mañ)">geidenn</a>-se gant frekañsoù an izotopoù a vez kavet en un endro bennak. Peurvuiañ e vez roet ar masoù atomek en <a href="/wiki/Taolenn_beriodek_an_elfenno%C3%B9" title="Taolenn beriodek an elfennoù">daolenn beriodek</a> diouzh kreunenn hag aergelc'h an Douar. Evit an elfennoù artifisiel e vez roet niver mas an izotop stabilañ etre krochedoù. </p> <div class="mw-heading mw-heading2"><h2 id="An_daveoù_mas_a-hed_an_istor"><span id="An_daveo.C3.B9_mas_a-hed_an_istor"></span>An daveoù mas a-hed an istor</h2></div> <ul><li>1805 : <a href="/w/index.php?title=John_Dalton&action=edit&redlink=1" class="new" title="John Dalton (n'eus ket eus ar bajenn-mañ)">John Dalton</a> a laka mas atomek an <a href="/wiki/Hidrogen" title="Hidrogen">hidrogen</a> kevatal da 1.</li> <li>1865 : <a href="/w/index.php?title=Jean_Stas&action=edit&redlink=1" class="new" title="Jean Stas (n'eus ket eus ar bajenn-mañ)">Jean Stas</a> a laka mas atomek an <a href="/wiki/Oksigen" title="Oksigen">oksigen 16</a> kevatal da 16.</li> <li>1961 : <a href="/wiki/Unaniezh_Etrevroadel_ar_Gimiezh_Pur_hag_Arveret" title="Unaniezh Etrevroadel ar Gimiezh Pur hag Arveret">Unaniezh Etrevroadel ar Gimiezh Pur hag Arveret</a> a ro dre ziviz termenadur a-vremañ ar mas atomek.</li></ul> <div class="mw-heading mw-heading2"><h2 id="Gwelet_ivez">Gwelet ivez</h2></div> <ul><li><a href="/wiki/Unanenn_mas_atomek" class="mw-redirect" title="Unanenn mas atomek">Unanenn mas atomek</a></li> <li><a href="/wiki/Izotop" title="Izotop">Izotop</a></li> <li><a href="/wiki/Mas_molekulel" class="mw-redirect" title="Mas molekulel">Mas molekulel</a></li></ul> <div class="mw-heading mw-heading2"><h2 id="Liammoù_diavaez"><span id="Liammo.C3.B9_diavaez"></span>Liammoù diavaez</h2></div> <ul><li><a rel="nofollow" class="external text" href="http://physics.nist.gov/cgi-bin/Compositions/stand_alone.pl?ele=&ascii=html&isotype=some">Tolz atomek an holl izotopoù</a></li></ul> <p><br /> <a href="/w/index.php?title=Patrom:Liamm_PuB&action=edit&redlink=1" class="new" title="Patrom:Liamm PuB (n'eus ket eus ar bajenn-mañ)">Patrom:Liamm PuB</a> </p>    </div><noscript><img src="https://login.wikimedia.org/wiki/Special:CentralAutoLogin/start?type=1x1&useformat=desktop" alt="" width="1" height="1" style="border: none; position: absolute;"></noscript> <div class="printfooter" data-nosnippet="">Adtapet diwar « <a dir="ltr" href="https://br.wikipedia.org/w/index.php?title=Mas_atomek&oldid=377050">https://br.wikipedia.org/w/index.php?title=Mas_atomek&oldid=377050</a> »</div></div> <div id="catlinks" class="catlinks" data-mw="interface"><div id="mw-normal-catlinks" class="mw-normal-catlinks"><a href="/wiki/Dibar:Rummado%C3%B9" title="Dibar:Rummadoù">Rummadoù</a>: <ul><li><a href="/wiki/Rummad:Danvez_pennado%C3%B9" title="Rummad:Danvez pennadoù">Danvez pennadoù</a></li><li><a href="/w/index.php?title=Rummad:Perzh_kimiek&action=edit&redlink=1" class="new" title="Rummad:Perzh kimiek (n'eus ket eus ar bajenn-mañ)">Perzh kimiek</a></li><li><a href="/wiki/Rummad:Fizik" title="Rummad:Fizik">Fizik</a></li></ul></div></div> </div> </main> </div> <div class="mw-footer-container"> <footer id="footer" class="mw-footer" > <ul id="footer-info"> <li id="footer-info-lastmod"> Kemmoù diwezhañ degaset d'ar bajenn-mañ d'an 3 Gwe 2008, da 16:53.</li> <li id="footer-info-copyright">Gallout a reer implijout an testennoù zo dindan <a rel="nofollow" class="external text" href="https://creativecommons.org/licenses/by-sa/4.0/deed.br">an Aotre-Implijout Creative Commons Dereiñ/Kenrannañ diouzh an hevelep divizoù</a>; divizoù ouzhpenn a c'hall bezañ ivez. Gwelet an <a class="external text" href="https://foundation.wikimedia.org/wiki/Special:MyLanguage/Policy:Terms_of_Use">Doareoù Implijout</a> evit gouzout hiroc'h.</li> </ul> <ul id="footer-places"> <li id="footer-places-privacy"><a href="https://foundation.wikimedia.org/wiki/Special:MyLanguage/Policy:Privacy_policy">Reolennoù prevezded</a></li> <li id="footer-places-about"><a href="/wiki/Wikipedia:Diwar-benn">Diwar-benn Wikipedia</a></li> <li id="footer-places-disclaimers"><a href="/wiki/Wikipedia:Kemenn_hollek">Kemennoù</a></li> <li id="footer-places-wm-codeofconduct"><a href="https://foundation.wikimedia.org/wiki/Special:MyLanguage/Policy:Universal_Code_of_Conduct">Kod emzalc’h</a></li> <li id="footer-places-developers"><a href="https://developer.wikimedia.org">Diorroerien</a></li> <li id="footer-places-statslink"><a href="https://stats.wikimedia.org/#/br.wikipedia.org">Stadegoù</a></li> <li id="footer-places-cookiestatement"><a href="https://foundation.wikimedia.org/wiki/Special:MyLanguage/Policy:Cookie_statement">Disklêriadur war an toupinoù</a></li> <li id="footer-places-mobileview"><a href="//br.m.wikipedia.org/w/index.php?title=Mas_atomek&oldid=377050&mobileaction=toggle_view_mobile" class="noprint stopMobileRedirectToggle">Gwel evit an hezoug</a></li> </ul> <ul id="footer-icons" class="noprint"> <li id="footer-copyrightico"><a href="https://wikimediafoundation.org/" class="cdx-button cdx-button--fake-button cdx-button--size-large cdx-button--fake-button--enabled"><img src="/static/images/footer/wikimedia-button.svg" width="84" height="29" alt="Wikimedia Foundation" loading="lazy"></a></li> <li id="footer-poweredbyico"><a href="https://www.mediawiki.org/" class="cdx-button cdx-button--fake-button cdx-button--size-large cdx-button--fake-button--enabled"><img src="/w/resources/assets/poweredby_mediawiki.svg" alt="Powered by MediaWiki" width="88" height="31" loading="lazy"></a></li> </ul> </footer> </div> </div> </div> <div class="vector-settings" id="p-dock-bottom"> <ul></ul> </div><script>(RLQ=window.RLQ||[]).push(function(){mw.config.set({"wgHostname":"mw-web.codfw.main-5c59558b9d-xtkjf","wgBackendResponseTime":231,"wgPageParseReport":{"limitreport":{"cputime":"0.014","walltime":"0.024","ppvisitednodes":{"value":62,"limit":1000000},"postexpandincludesize":{"value":1275,"limit":2097152},"templateargumentsize":{"value":342,"limit":2097152},"expansiondepth":{"value":6,"limit":100},"expensivefunctioncount":{"value":0,"limit":500},"unstrip-depth":{"value":0,"limit":20},"unstrip-size":{"value":0,"limit":5000000},"entityaccesscount":{"value":0,"limit":400},"timingprofile":["100.00% 6.029 1 -total"," 78.06% 4.706 1 Patrom:LabourAChom"," 24.88% 1.500 1 Patrom:Talgen"," 19.77% 1.192 1 Patrom:Liamm_PuB"]},"cachereport":{"origin":"mw-web.codfw.main-5c59558b9d-xtkjf","timestamp":"20241201070756","ttl":2592000,"transientcontent":false}}});});</script> <script type="application/ld+json">{"@context":"https:\/\/schema.org","@type":"Article","name":"Mas atomek","url":"https:\/\/br.wikipedia.org\/wiki\/Mas_atomek","sameAs":"http:\/\/www.wikidata.org\/entity\/Q3840065","mainEntity":"http:\/\/www.wikidata.org\/entity\/Q3840065","author":{"@type":"Organization","name":"Contributors to Wikimedia projects"},"publisher":{"@type":"Organization","name":"Wikimedia Foundation, Inc.","logo":{"@type":"ImageObject","url":"https:\/\/www.wikimedia.org\/static\/images\/wmf-hor-googpub.png"}},"datePublished":"2005-09-03T12:22:53Z","dateModified":"2008-09-03T16:53:42Z"}</script> </body> </html>