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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="Go to an article in another language. Available in 119 languages" > <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-119" 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">119 languages</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/Isotoop" title="Isotoop – Afrikaans" lang="af" hreflang="af" data-title="Isotoop" data-language-autonym="Afrikaans" data-language-local-name="Afrikaans" class="interlanguage-link-target"><span>Afrikaans</span></a></li><li class="interlanguage-link interwiki-ar mw-list-item"><a href="https://ar.wikipedia.org/wiki/%D9%86%D8%B8%D9%8A%D8%B1_(%D9%83%D9%8A%D9%85%D9%8A%D8%A7%D8%A1)" title="نظير (كيمياء) – Arabic" lang="ar" hreflang="ar" data-title="نظير (كيمياء)" data-language-autonym="العربية" data-language-local-name="Arabic" class="interlanguage-link-target"><span>العربية</span></a></li><li class="interlanguage-link interwiki-an mw-list-item"><a href="https://an.wikipedia.org/wiki/Isotopo" title="Isotopo – Aragonese" lang="an" hreflang="an" data-title="Isotopo" data-language-autonym="Aragonés" data-language-local-name="Aragonese" class="interlanguage-link-target"><span>Aragonés</span></a></li><li class="interlanguage-link interwiki-ast mw-list-item"><a href="https://ast.wikipedia.org/wiki/Is%C3%B3topu" title="Isótopu – Asturian" lang="ast" hreflang="ast" data-title="Isótopu" data-language-autonym="Asturianu" data-language-local-name="Asturian" 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/%C4%B0zotop" title="İzotop – Azerbaijani" lang="az" hreflang="az" data-title="İzotop" data-language-autonym="Azərbaycanca" data-language-local-name="Azerbaijani" class="interlanguage-link-target"><span>Azərbaycanca</span></a></li><li class="interlanguage-link interwiki-ban mw-list-item"><a href="https://ban.wikipedia.org/wiki/Isotop" title="Isotop – Balinese" lang="ban" hreflang="ban" data-title="Isotop" data-language-autonym="Basa Bali" data-language-local-name="Balinese" class="interlanguage-link-target"><span>Basa Bali</span></a></li><li class="interlanguage-link interwiki-bn mw-list-item"><a href="https://bn.wikipedia.org/wiki/%E0%A6%86%E0%A6%87%E0%A6%B8%E0%A7%8B%E0%A6%9F%E0%A7%8B%E0%A6%AA" title="আইসোটোপ – Bangla" lang="bn" hreflang="bn" data-title="আইসোটোপ" data-language-autonym="বাংলা" data-language-local-name="Bangla" class="interlanguage-link-target"><span>বাংলা</span></a></li><li class="interlanguage-link interwiki-zh-min-nan mw-list-item"><a href="https://zh-min-nan.wikipedia.org/wiki/T%C3%B4ng-%C5%ABi-s%C3%B2%CD%98" title="Tông-ūi-sò͘ – Minnan" lang="nan" hreflang="nan" data-title="Tông-ūi-sò͘" 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-be mw-list-item"><a href="https://be.wikipedia.org/wiki/%D0%86%D0%B7%D0%B0%D1%82%D0%BE%D0%BF" title="Ізатоп – Belarusian" lang="be" hreflang="be" data-title="Ізатоп" data-language-autonym="Беларуская" data-language-local-name="Belarusian" class="interlanguage-link-target"><span>Беларуская</span></a></li><li class="interlanguage-link interwiki-be-x-old mw-list-item"><a href="https://be-tarask.wikipedia.org/wiki/%D0%86%D0%B7%D0%B0%D1%82%D0%BE%D0%BF" title="Ізатоп – Belarusian (Taraškievica orthography)" lang="be-tarask" hreflang="be-tarask" data-title="Ізатоп" 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-bh mw-list-item"><a href="https://bh.wikipedia.org/wiki/%E0%A4%86%E0%A4%87%E0%A4%B8%E0%A5%8B%E0%A4%9F%E0%A5%8B%E0%A4%AA" title="आइसोटोप – Bhojpuri" lang="bh" hreflang="bh" data-title="आइसोटोप" data-language-autonym="भोजपुरी" data-language-local-name="Bhojpuri" class="interlanguage-link-target"><span>भोजपुरी</span></a></li><li class="interlanguage-link interwiki-bcl mw-list-item"><a href="https://bcl.wikipedia.org/wiki/Isotopo" title="Isotopo – Central Bikol" lang="bcl" hreflang="bcl" data-title="Isotopo" data-language-autonym="Bikol Central" data-language-local-name="Central Bikol" class="interlanguage-link-target"><span>Bikol Central</span></a></li><li class="interlanguage-link interwiki-bg mw-list-item"><a href="https://bg.wikipedia.org/wiki/%D0%98%D0%B7%D0%BE%D1%82%D0%BE%D0%BF" title="Изотоп – Bulgarian" lang="bg" hreflang="bg" data-title="Изотоп" data-language-autonym="Български" data-language-local-name="Bulgarian" class="interlanguage-link-target"><span>Български</span></a></li><li class="interlanguage-link interwiki-bs mw-list-item"><a href="https://bs.wikipedia.org/wiki/Izotop" title="Izotop – Bosnian" lang="bs" hreflang="bs" data-title="Izotop" data-language-autonym="Bosanski" data-language-local-name="Bosnian" class="interlanguage-link-target"><span>Bosanski</span></a></li><li class="interlanguage-link interwiki-br mw-list-item"><a href="https://br.wikipedia.org/wiki/Izotop" title="Izotop – Breton" lang="br" hreflang="br" data-title="Izotop" data-language-autonym="Brezhoneg" data-language-local-name="Breton" class="interlanguage-link-target"><span>Brezhoneg</span></a></li><li class="interlanguage-link interwiki-ca mw-list-item"><a href="https://ca.wikipedia.org/wiki/Is%C3%B2top" title="Isòtop – Catalan" lang="ca" hreflang="ca" data-title="Isòtop" data-language-autonym="Català" data-language-local-name="Catalan" class="interlanguage-link-target"><span>Català</span></a></li><li class="interlanguage-link interwiki-cv mw-list-item"><a href="https://cv.wikipedia.org/wiki/%D0%98%D0%B7%D0%BE%D1%82%D0%BE%D0%BF" title="Изотоп – Chuvash" lang="cv" hreflang="cv" data-title="Изотоп" data-language-autonym="Чӑвашла" data-language-local-name="Chuvash" class="interlanguage-link-target"><span>Чӑвашла</span></a></li><li class="interlanguage-link interwiki-ceb mw-list-item"><a href="https://ceb.wikipedia.org/wiki/Isotop" title="Isotop – Cebuano" lang="ceb" hreflang="ceb" data-title="Isotop" data-language-autonym="Cebuano" data-language-local-name="Cebuano" class="interlanguage-link-target"><span>Cebuano</span></a></li><li class="interlanguage-link interwiki-cs mw-list-item"><a href="https://cs.wikipedia.org/wiki/Izotop" title="Izotop – Czech" lang="cs" hreflang="cs" data-title="Izotop" data-language-autonym="Čeština" data-language-local-name="Czech" class="interlanguage-link-target"><span>Čeština</span></a></li><li class="interlanguage-link interwiki-sn mw-list-item"><a href="https://sn.wikipedia.org/wiki/Enzanhara" title="Enzanhara – Shona" lang="sn" hreflang="sn" data-title="Enzanhara" data-language-autonym="ChiShona" data-language-local-name="Shona" class="interlanguage-link-target"><span>ChiShona</span></a></li><li class="interlanguage-link interwiki-cy mw-list-item"><a href="https://cy.wikipedia.org/wiki/Isotop" title="Isotop – Welsh" lang="cy" hreflang="cy" data-title="Isotop" data-language-autonym="Cymraeg" data-language-local-name="Welsh" 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/Isotop" title="Isotop – Danish" lang="da" hreflang="da" data-title="Isotop" data-language-autonym="Dansk" data-language-local-name="Danish" class="interlanguage-link-target"><span>Dansk</span></a></li><li class="interlanguage-link interwiki-ary mw-list-item"><a href="https://ary.wikipedia.org/wiki/%D8%A5%D9%8A%D8%B2%D9%88%D8%B7%D9%88%D9%BE" title="إيزوطوپ – Moroccan Arabic" lang="ary" hreflang="ary" data-title="إيزوطوپ" data-language-autonym="الدارجة" data-language-local-name="Moroccan Arabic" class="interlanguage-link-target"><span>الدارجة</span></a></li><li class="interlanguage-link interwiki-de mw-list-item"><a href="https://de.wikipedia.org/wiki/Isotop" title="Isotop – German" lang="de" hreflang="de" data-title="Isotop" data-language-autonym="Deutsch" data-language-local-name="German" class="interlanguage-link-target"><span>Deutsch</span></a></li><li class="interlanguage-link interwiki-et mw-list-item"><a href="https://et.wikipedia.org/wiki/Isotoop" title="Isotoop – Estonian" lang="et" hreflang="et" data-title="Isotoop" data-language-autonym="Eesti" data-language-local-name="Estonian" class="interlanguage-link-target"><span>Eesti</span></a></li><li class="interlanguage-link interwiki-el mw-list-item"><a href="https://el.wikipedia.org/wiki/%CE%99%CF%83%CF%8C%CF%84%CE%BF%CF%80%CE%BF" title="Ισότοπο – Greek" lang="el" hreflang="el" data-title="Ισότοπο" data-language-autonym="Ελληνικά" data-language-local-name="Greek" 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/Isotope" title="Isotope – English" lang="en" hreflang="en" data-title="Isotope" data-language-autonym="English" data-language-local-name="English" class="interlanguage-link-target"><span>English</span></a></li><li class="interlanguage-link interwiki-es mw-list-item"><a href="https://es.wikipedia.org/wiki/Is%C3%B3topo" title="Isótopo – Spanish" lang="es" hreflang="es" data-title="Isótopo" data-language-autonym="Español" data-language-local-name="Spanish" class="interlanguage-link-target"><span>Español</span></a></li><li class="interlanguage-link interwiki-eo mw-list-item"><a href="https://eo.wikipedia.org/wiki/Izotopo" title="Izotopo – Esperanto" lang="eo" hreflang="eo" data-title="Izotopo" data-language-autonym="Esperanto" data-language-local-name="Esperanto" class="interlanguage-link-target"><span>Esperanto</span></a></li><li class="interlanguage-link interwiki-eu mw-list-item"><a href="https://eu.wikipedia.org/wiki/Isotopo" title="Isotopo – Basque" lang="eu" hreflang="eu" data-title="Isotopo" 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%A7%DB%8C%D8%B2%D9%88%D8%AA%D9%88%D9%BE" title="ایزوتوپ – Persian" lang="fa" hreflang="fa" data-title="ایزوتوپ" data-language-autonym="فارسی" data-language-local-name="Persian" class="interlanguage-link-target"><span>فارسی</span></a></li><li class="interlanguage-link interwiki-fo mw-list-item"><a href="https://fo.wikipedia.org/wiki/Isotopar" title="Isotopar – Faroese" lang="fo" hreflang="fo" data-title="Isotopar" data-language-autonym="Føroyskt" data-language-local-name="Faroese" class="interlanguage-link-target"><span>Føroyskt</span></a></li><li class="interlanguage-link interwiki-fr mw-list-item"><a href="https://fr.wikipedia.org/wiki/Isotope" title="Isotope – French" lang="fr" hreflang="fr" data-title="Isotope" data-language-autonym="Français" data-language-local-name="French" class="interlanguage-link-target"><span>Français</span></a></li><li class="interlanguage-link interwiki-ga mw-list-item"><a href="https://ga.wikipedia.org/wiki/Iseat%C3%B3p" title="Iseatóp – Irish" lang="ga" hreflang="ga" data-title="Iseatóp" data-language-autonym="Gaeilge" data-language-local-name="Irish" 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/Is%C3%B3topo" title="Isótopo – Galician" lang="gl" hreflang="gl" data-title="Isótopo" data-language-autonym="Galego" data-language-local-name="Galician" class="interlanguage-link-target"><span>Galego</span></a></li><li class="interlanguage-link interwiki-gan mw-list-item"><a href="https://gan.wikipedia.org/wiki/%E5%90%8C%E4%BD%8D%E7%B4%A0" title="同位素 – Gan" lang="gan" hreflang="gan" data-title="同位素" 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-ko mw-list-item"><a href="https://ko.wikipedia.org/wiki/%EB%8F%99%EC%9C%84_%EC%9B%90%EC%86%8C" title="동위 원소 – Korean" lang="ko" hreflang="ko" data-title="동위 원소" data-language-autonym="한국어" data-language-local-name="Korean" class="interlanguage-link-target"><span>한국어</span></a></li><li class="interlanguage-link interwiki-hy mw-list-item"><a href="https://hy.wikipedia.org/wiki/%D4%BB%D5%A6%D5%B8%D5%BF%D5%B8%D5%BA%D5%B6%D5%A5%D6%80" title="Իզոտոպներ – Armenian" lang="hy" hreflang="hy" data-title="Իզոտոպներ" data-language-autonym="Հայերեն" data-language-local-name="Armenian" class="interlanguage-link-target"><span>Հայերեն</span></a></li><li class="interlanguage-link interwiki-hi mw-list-item"><a href="https://hi.wikipedia.org/wiki/%E0%A4%B8%E0%A4%AE%E0%A4%B8%E0%A5%8D%E0%A4%A5%E0%A4%BE%E0%A4%A8%E0%A4%BF%E0%A4%95" title="समस्थानिक – Hindi" lang="hi" hreflang="hi" data-title="समस्थानिक" data-language-autonym="हिन्दी" data-language-local-name="Hindi" class="interlanguage-link-target"><span>हिन्दी</span></a></li><li class="interlanguage-link interwiki-hr mw-list-item"><a href="https://hr.wikipedia.org/wiki/Izotop" title="Izotop – Croatian" lang="hr" hreflang="hr" data-title="Izotop" data-language-autonym="Hrvatski" data-language-local-name="Croatian" class="interlanguage-link-target"><span>Hrvatski</span></a></li><li class="interlanguage-link interwiki-io mw-list-item"><a href="https://io.wikipedia.org/wiki/Izotopo" title="Izotopo – Ido" lang="io" hreflang="io" data-title="Izotopo" data-language-autonym="Ido" data-language-local-name="Ido" class="interlanguage-link-target"><span>Ido</span></a></li><li class="interlanguage-link interwiki-id mw-list-item"><a href="https://id.wikipedia.org/wiki/Isotop" title="Isotop – Indonesian" lang="id" hreflang="id" data-title="Isotop" data-language-autonym="Bahasa Indonesia" data-language-local-name="Indonesian" class="interlanguage-link-target"><span>Bahasa Indonesia</span></a></li><li class="interlanguage-link interwiki-ia mw-list-item"><a href="https://ia.wikipedia.org/wiki/Isotopo" title="Isotopo – Interlingua" lang="ia" hreflang="ia" data-title="Isotopo" data-language-autonym="Interlingua" data-language-local-name="Interlingua" class="interlanguage-link-target"><span>Interlingua</span></a></li><li class="interlanguage-link interwiki-zu mw-list-item"><a href="https://zu.wikipedia.org/wiki/IChembe" title="IChembe – Zulu" lang="zu" hreflang="zu" data-title="IChembe" data-language-autonym="IsiZulu" data-language-local-name="Zulu" class="interlanguage-link-target"><span>IsiZulu</span></a></li><li class="interlanguage-link interwiki-is mw-list-item"><a href="https://is.wikipedia.org/wiki/Sams%C3%A6ta" title="Samsæta – Icelandic" lang="is" hreflang="is" data-title="Samsæta" data-language-autonym="Íslenska" data-language-local-name="Icelandic" 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/Isotopo" title="Isotopo – Italian" lang="it" hreflang="it" data-title="Isotopo" data-language-autonym="Italiano" data-language-local-name="Italian" class="interlanguage-link-target"><span>Italiano</span></a></li><li class="interlanguage-link interwiki-he mw-list-item"><a href="https://he.wikipedia.org/wiki/%D7%90%D7%99%D7%96%D7%95%D7%98%D7%95%D7%A4" title="איזוטופ – Hebrew" lang="he" hreflang="he" data-title="איזוטופ" data-language-autonym="עברית" data-language-local-name="Hebrew" class="interlanguage-link-target"><span>עברית</span></a></li><li class="interlanguage-link interwiki-jv mw-list-item"><a href="https://jv.wikipedia.org/wiki/Isotop" title="Isotop – Javanese" lang="jv" hreflang="jv" data-title="Isotop" data-language-autonym="Jawa" data-language-local-name="Javanese" class="interlanguage-link-target"><span>Jawa</span></a></li><li class="interlanguage-link interwiki-kn mw-list-item"><a href="https://kn.wikipedia.org/wiki/%E0%B2%B8%E0%B2%AE%E0%B2%B8%E0%B3%8D%E0%B2%A5%E0%B2%BE%E0%B2%A8%E0%B2%BF" title="ಸಮಸ್ಥಾನಿ – Kannada" lang="kn" hreflang="kn" data-title="ಸಮಸ್ಥಾನಿ" data-language-autonym="ಕನ್ನಡ" data-language-local-name="Kannada" class="interlanguage-link-target"><span>ಕನ್ನಡ</span></a></li><li class="interlanguage-link interwiki-ka mw-list-item"><a href="https://ka.wikipedia.org/wiki/%E1%83%98%E1%83%96%E1%83%9D%E1%83%A2%E1%83%9D%E1%83%9E%E1%83%94%E1%83%91%E1%83%98" title="იზოტოპები – Georgian" lang="ka" hreflang="ka" data-title="იზოტოპები" data-language-autonym="ქართული" data-language-local-name="Georgian" class="interlanguage-link-target"><span>ქართული</span></a></li><li class="interlanguage-link interwiki-kk mw-list-item"><a href="https://kk.wikipedia.org/wiki/%D0%98%D0%B7%D0%BE%D1%82%D0%BE%D0%BF%D1%82%D0%B0%D1%80" title="Изотоптар – Kazakh" lang="kk" hreflang="kk" data-title="Изотоптар" data-language-autonym="Қазақша" data-language-local-name="Kazakh" class="interlanguage-link-target"><span>Қазақша</span></a></li><li class="interlanguage-link interwiki-sw mw-list-item"><a href="https://sw.wikipedia.org/wiki/Isotopi" title="Isotopi – Swahili" lang="sw" hreflang="sw" data-title="Isotopi" data-language-autonym="Kiswahili" data-language-local-name="Swahili" class="interlanguage-link-target"><span>Kiswahili</span></a></li><li class="interlanguage-link interwiki-ht mw-list-item"><a href="https://ht.wikipedia.org/wiki/Izot%C3%B2p" title="Izotòp – Haitian Creole" lang="ht" hreflang="ht" data-title="Izotòp" data-language-autonym="Kreyòl ayisyen" data-language-local-name="Haitian Creole" class="interlanguage-link-target"><span>Kreyòl ayisyen</span></a></li><li class="interlanguage-link interwiki-ku mw-list-item"><a href="https://ku.wikipedia.org/wiki/%C3%8Ezotop" title="Îzotop – Kurdish" lang="ku" hreflang="ku" data-title="Îzotop" data-language-autonym="Kurdî" data-language-local-name="Kurdish" class="interlanguage-link-target"><span>Kurdî</span></a></li><li class="interlanguage-link interwiki-ky mw-list-item"><a href="https://ky.wikipedia.org/wiki/%D0%98%D0%B7%D0%BE%D1%82%D0%BE%D0%BF%D1%82%D0%BE%D1%80" title="Изотоптор – Kyrgyz" lang="ky" hreflang="ky" data-title="Изотоптор" data-language-autonym="Кыргызча" data-language-local-name="Kyrgyz" 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/Isotopus" title="Isotopus – Latin" lang="la" hreflang="la" data-title="Isotopus" data-language-autonym="Latina" data-language-local-name="Latin" class="interlanguage-link-target"><span>Latina</span></a></li><li class="interlanguage-link interwiki-lv mw-list-item"><a href="https://lv.wikipedia.org/wiki/Izotops" title="Izotops – Latvian" lang="lv" hreflang="lv" data-title="Izotops" data-language-autonym="Latviešu" data-language-local-name="Latvian" class="interlanguage-link-target"><span>Latviešu</span></a></li><li class="interlanguage-link interwiki-lt mw-list-item"><a href="https://lt.wikipedia.org/wiki/Izotopas" title="Izotopas – Lithuanian" lang="lt" hreflang="lt" data-title="Izotopas" data-language-autonym="Lietuvių" data-language-local-name="Lithuanian" class="interlanguage-link-target"><span>Lietuvių</span></a></li><li class="interlanguage-link interwiki-li mw-list-item"><a href="https://li.wikipedia.org/wiki/Isotoop" title="Isotoop – Limburgish" lang="li" hreflang="li" data-title="Isotoop" data-language-autonym="Limburgs" data-language-local-name="Limburgish" 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/Isotop" title="Isotop – Lombard" lang="lmo" hreflang="lmo" data-title="Isotop" data-language-autonym="Lombard" data-language-local-name="Lombard" class="interlanguage-link-target"><span>Lombard</span></a></li><li class="interlanguage-link interwiki-hu mw-list-item"><a href="https://hu.wikipedia.org/wiki/Izot%C3%B3p" title="Izotóp – Hungarian" lang="hu" hreflang="hu" data-title="Izotóp" data-language-autonym="Magyar" data-language-local-name="Hungarian" class="interlanguage-link-target"><span>Magyar</span></a></li><li class="interlanguage-link interwiki-mk mw-list-item"><a href="https://mk.wikipedia.org/wiki/%D0%98%D0%B7%D0%BE%D1%82%D0%BE%D0%BF" title="Изотоп – Macedonian" lang="mk" hreflang="mk" data-title="Изотоп" data-language-autonym="Македонски" data-language-local-name="Macedonian" class="interlanguage-link-target"><span>Македонски</span></a></li><li class="interlanguage-link interwiki-mg mw-list-item"><a href="https://mg.wikipedia.org/wiki/Miratoerana" title="Miratoerana – Malagasy" lang="mg" hreflang="mg" data-title="Miratoerana" data-language-autonym="Malagasy" data-language-local-name="Malagasy" class="interlanguage-link-target"><span>Malagasy</span></a></li><li class="interlanguage-link interwiki-ml mw-list-item"><a href="https://ml.wikipedia.org/wiki/%E0%B4%90%E0%B4%B8%E0%B5%8B%E0%B4%9F%E0%B5%8B%E0%B4%AA%E0%B5%8D%E0%B4%AA%E0%B5%8D" title="ഐസോടോപ്പ് – Malayalam" lang="ml" hreflang="ml" data-title="ഐസോടോപ്പ്" data-language-autonym="മലയാളം" data-language-local-name="Malayalam" class="interlanguage-link-target"><span>മലയാളം</span></a></li><li class="interlanguage-link interwiki-mr mw-list-item"><a href="https://mr.wikipedia.org/wiki/%E0%A4%B8%E0%A4%AE%E0%A4%B8%E0%A5%8D%E0%A4%A5%E0%A4%BE%E0%A4%A8%E0%A4%BF%E0%A4%95%E0%A5%87" title="समस्थानिके – Marathi" lang="mr" hreflang="mr" data-title="समस्थानिके" 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/Isotop" title="Isotop – Malay" lang="ms" hreflang="ms" data-title="Isotop" data-language-autonym="Bahasa Melayu" data-language-local-name="Malay" class="interlanguage-link-target"><span>Bahasa Melayu</span></a></li><li class="interlanguage-link interwiki-mn mw-list-item"><a href="https://mn.wikipedia.org/wiki/%D0%98%D0%B7%D0%BE%D1%82%D0%BE%D0%BF" title="Изотоп – Mongolian" lang="mn" hreflang="mn" data-title="Изотоп" data-language-autonym="Монгол" data-language-local-name="Mongolian" class="interlanguage-link-target"><span>Монгол</span></a></li><li class="interlanguage-link interwiki-my mw-list-item"><a href="https://my.wikipedia.org/wiki/%E1%80%A1%E1%80%AD%E1%80%AF%E1%80%84%E1%80%BA%E1%80%86%E1%80%AD%E1%80%AF%E1%80%90%E1%80%AF%E1%80%95%E1%80%BA" title="အိုင်ဆိုတုပ် – Burmese" lang="my" hreflang="my" data-title="အိုင်ဆိုတုပ်" data-language-autonym="မြန်မာဘာသာ" data-language-local-name="Burmese" class="interlanguage-link-target"><span>မြန်မာဘာသာ</span></a></li><li class="interlanguage-link interwiki-nl mw-list-item"><a href="https://nl.wikipedia.org/wiki/Isotoop" title="Isotoop – Dutch" lang="nl" hreflang="nl" data-title="Isotoop" data-language-autonym="Nederlands" data-language-local-name="Dutch" class="interlanguage-link-target"><span>Nederlands</span></a></li><li class="interlanguage-link interwiki-ne mw-list-item"><a href="https://ne.wikipedia.org/wiki/%E0%A4%B8%E0%A4%AE%E0%A4%B8%E0%A5%8D%E0%A4%A5%E0%A4%BE%E0%A4%A8%E0%A4%BF%E0%A4%95" title="समस्थानिक – Nepali" lang="ne" hreflang="ne" data-title="समस्थानिक" data-language-autonym="नेपाली" data-language-local-name="Nepali" class="interlanguage-link-target"><span>नेपाली</span></a></li><li class="interlanguage-link interwiki-new mw-list-item"><a href="https://new.wikipedia.org/wiki/%E0%A4%86%E0%A4%87%E0%A4%B8%E0%A5%8B%E0%A4%9F%E0%A5%8B%E0%A4%AA" title="आइसोटोप – Newari" lang="new" hreflang="new" data-title="आइसोटोप" data-language-autonym="नेपाल भाषा" data-language-local-name="Newari" class="interlanguage-link-target"><span>नेपाल भाषा</span></a></li><li class="interlanguage-link interwiki-ja mw-list-item"><a href="https://ja.wikipedia.org/wiki/%E5%90%8C%E4%BD%8D%E4%BD%93" title="同位体 – Japanese" lang="ja" hreflang="ja" data-title="同位体" data-language-autonym="日本語" data-language-local-name="Japanese" class="interlanguage-link-target"><span>日本語</span></a></li><li class="interlanguage-link interwiki-frr mw-list-item"><a href="https://frr.wikipedia.org/wiki/Isotoop" title="Isotoop – Northern Frisian" lang="frr" hreflang="frr" data-title="Isotoop" data-language-autonym="Nordfriisk" data-language-local-name="Northern Frisian" class="interlanguage-link-target"><span>Nordfriisk</span></a></li><li class="interlanguage-link interwiki-no mw-list-item"><a href="https://no.wikipedia.org/wiki/Isotop" title="Isotop – Norwegian Bokmål" lang="nb" hreflang="nb" data-title="Isotop" data-language-autonym="Norsk bokmål" data-language-local-name="Norwegian Bokmål" class="interlanguage-link-target"><span>Norsk bokmål</span></a></li><li class="interlanguage-link interwiki-nn mw-list-item"><a href="https://nn.wikipedia.org/wiki/Isotop" title="Isotop – Norwegian Nynorsk" lang="nn" hreflang="nn" data-title="Isotop" data-language-autonym="Norsk nynorsk" data-language-local-name="Norwegian Nynorsk" class="interlanguage-link-target"><span>Norsk nynorsk</span></a></li><li class="interlanguage-link interwiki-nov mw-list-item"><a href="https://nov.wikipedia.org/wiki/Isotope" title="Isotope – Novial" lang="nov" hreflang="nov" data-title="Isotope" data-language-autonym="Novial" data-language-local-name="Novial" class="interlanguage-link-target"><span>Novial</span></a></li><li class="interlanguage-link interwiki-oc mw-list-item"><a href="https://oc.wikipedia.org/wiki/Isot%C3%B2p" title="Isotòp – Occitan" lang="oc" hreflang="oc" data-title="Isotòp" data-language-autonym="Occitan" data-language-local-name="Occitan" class="interlanguage-link-target"><span>Occitan</span></a></li><li class="interlanguage-link interwiki-uz mw-list-item"><a href="https://uz.wikipedia.org/wiki/Izotoplar" title="Izotoplar – Uzbek" lang="uz" hreflang="uz" data-title="Izotoplar" data-language-autonym="Oʻzbekcha / ўзбекча" data-language-local-name="Uzbek" class="interlanguage-link-target"><span>Oʻzbekcha / ўзбекча</span></a></li><li class="interlanguage-link interwiki-pa mw-list-item"><a href="https://pa.wikipedia.org/wiki/%E0%A8%86%E0%A8%88%E0%A8%B8%E0%A9%8B%E0%A8%9F%E0%A9%8B%E0%A8%AA" title="ਆਈਸੋਟੋਪ – Punjabi" lang="pa" hreflang="pa" data-title="ਆਈਸੋਟੋਪ" data-language-autonym="ਪੰਜਾਬੀ" data-language-local-name="Punjabi" class="interlanguage-link-target"><span>ਪੰਜਾਬੀ</span></a></li><li class="interlanguage-link interwiki-pnb mw-list-item"><a href="https://pnb.wikipedia.org/wiki/%D8%A2%D8%A6%DB%8C%D8%B3%D9%88%D9%B9%D9%88%D9%BE" title="آئیسوٹوپ – Western Punjabi" lang="pnb" hreflang="pnb" data-title="آئیسوٹوپ" data-language-autonym="پنجابی" data-language-local-name="Western Punjabi" class="interlanguage-link-target"><span>پنجابی</span></a></li><li class="interlanguage-link interwiki-nds mw-list-item"><a href="https://nds.wikipedia.org/wiki/Isotop" title="Isotop – Low German" lang="nds" hreflang="nds" data-title="Isotop" data-language-autonym="Plattdüütsch" data-language-local-name="Low German" class="interlanguage-link-target"><span>Plattdüütsch</span></a></li><li class="interlanguage-link interwiki-pl mw-list-item"><a href="https://pl.wikipedia.org/wiki/Izotopy" title="Izotopy – Polish" lang="pl" hreflang="pl" data-title="Izotopy" data-language-autonym="Polski" data-language-local-name="Polish" class="interlanguage-link-target"><span>Polski</span></a></li><li class="interlanguage-link interwiki-pt mw-list-item"><a href="https://pt.wikipedia.org/wiki/Is%C3%B3topo" title="Isótopo – Portuguese" lang="pt" hreflang="pt" data-title="Isótopo" data-language-autonym="Português" data-language-local-name="Portuguese" class="interlanguage-link-target"><span>Português</span></a></li><li class="interlanguage-link interwiki-ro mw-list-item"><a href="https://ro.wikipedia.org/wiki/Izotop" title="Izotop – Romanian" lang="ro" hreflang="ro" data-title="Izotop" data-language-autonym="Română" data-language-local-name="Romanian" class="interlanguage-link-target"><span>Română</span></a></li><li class="interlanguage-link interwiki-rue mw-list-item"><a href="https://rue.wikipedia.org/wiki/%D0%98%D0%B7%D0%BE%D1%82%D0%BE%D0%BF" title="Изотоп – Rusyn" lang="rue" hreflang="rue" data-title="Изотоп" data-language-autonym="Русиньскый" data-language-local-name="Rusyn" class="interlanguage-link-target"><span>Русиньскый</span></a></li><li class="interlanguage-link interwiki-ru mw-list-item"><a href="https://ru.wikipedia.org/wiki/%D0%98%D0%B7%D0%BE%D1%82%D0%BE%D0%BF%D1%8B" title="Изотопы – Russian" lang="ru" hreflang="ru" data-title="Изотопы" data-language-autonym="Русский" data-language-local-name="Russian" class="interlanguage-link-target"><span>Русский</span></a></li><li class="interlanguage-link interwiki-skr mw-list-item"><a href="https://skr.wikipedia.org/wiki/%D8%A2%D8%A6%D8%B3%D9%88%D9%B9%D9%88%D9%BE" title="آئسوٹوپ – Saraiki" lang="skr" hreflang="skr" data-title="آئسوٹوپ" data-language-autonym="سرائیکی" data-language-local-name="Saraiki" class="interlanguage-link-target"><span>سرائیکی</span></a></li><li class="interlanguage-link interwiki-sco mw-list-item"><a href="https://sco.wikipedia.org/wiki/Isotope" title="Isotope – Scots" lang="sco" hreflang="sco" data-title="Isotope" data-language-autonym="Scots" data-language-local-name="Scots" class="interlanguage-link-target"><span>Scots</span></a></li><li class="interlanguage-link interwiki-stq mw-list-item"><a href="https://stq.wikipedia.org/wiki/Isotop" title="Isotop – Saterland Frisian" lang="stq" hreflang="stq" data-title="Isotop" data-language-autonym="Seeltersk" data-language-local-name="Saterland Frisian" class="interlanguage-link-target"><span>Seeltersk</span></a></li><li class="interlanguage-link interwiki-sq mw-list-item"><a href="https://sq.wikipedia.org/wiki/Izotopi" title="Izotopi – Albanian" lang="sq" hreflang="sq" data-title="Izotopi" data-language-autonym="Shqip" data-language-local-name="Albanian" class="interlanguage-link-target"><span>Shqip</span></a></li><li class="interlanguage-link interwiki-si mw-list-item"><a href="https://si.wikipedia.org/wiki/%E0%B7%83%E0%B6%B8%E0%B7%83%E0%B7%8A%E0%B6%AE%E0%B7%8F%E0%B6%B1%E0%B7%92%E0%B6%9A" title="සමස්ථානික – Sinhala" lang="si" hreflang="si" data-title="සමස්ථානික" data-language-autonym="සිංහල" data-language-local-name="Sinhala" class="interlanguage-link-target"><span>සිංහල</span></a></li><li class="interlanguage-link interwiki-sd mw-list-item"><a href="https://sd.wikipedia.org/wiki/%DA%BE%D9%85%D8%B2%D8%A7%D8%AF" title="ھمزاد – Sindhi" lang="sd" hreflang="sd" data-title="ھمزاد" data-language-autonym="سنڌي" data-language-local-name="Sindhi" class="interlanguage-link-target"><span>سنڌي</span></a></li><li class="interlanguage-link interwiki-sk mw-list-item"><a href="https://sk.wikipedia.org/wiki/Izotop" title="Izotop – Slovak" lang="sk" hreflang="sk" data-title="Izotop" data-language-autonym="Slovenčina" data-language-local-name="Slovak" 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/Izotop" title="Izotop – Slovenian" lang="sl" hreflang="sl" data-title="Izotop" data-language-autonym="Slovenščina" data-language-local-name="Slovenian" 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/Isotope" title="Isotope – Somali" lang="so" hreflang="so" data-title="Isotope" data-language-autonym="Soomaaliga" data-language-local-name="Somali" class="interlanguage-link-target"><span>Soomaaliga</span></a></li><li class="interlanguage-link interwiki-sr mw-list-item"><a href="https://sr.wikipedia.org/wiki/%D0%98%D0%B7%D0%BE%D1%82%D0%BE%D0%BF" title="Изотоп – Serbian" lang="sr" hreflang="sr" data-title="Изотоп" data-language-autonym="Српски / srpski" data-language-local-name="Serbian" class="interlanguage-link-target"><span>Српски / srpski</span></a></li><li class="interlanguage-link interwiki-sh mw-list-item"><a href="https://sh.wikipedia.org/wiki/Izotop" title="Izotop – Serbo-Croatian" lang="sh" hreflang="sh" data-title="Izotop" data-language-autonym="Srpskohrvatski / српскохрватски" data-language-local-name="Serbo-Croatian" class="interlanguage-link-target"><span>Srpskohrvatski / српскохрватски</span></a></li><li class="interlanguage-link interwiki-su mw-list-item"><a href="https://su.wikipedia.org/wiki/Isotop" title="Isotop – Sundanese" lang="su" hreflang="su" data-title="Isotop" data-language-autonym="Sunda" data-language-local-name="Sundanese" class="interlanguage-link-target"><span>Sunda</span></a></li><li class="interlanguage-link interwiki-fi mw-list-item"><a href="https://fi.wikipedia.org/wiki/Isotooppi" title="Isotooppi – Finnish" lang="fi" hreflang="fi" data-title="Isotooppi" data-language-autonym="Suomi" data-language-local-name="Finnish" class="interlanguage-link-target"><span>Suomi</span></a></li><li class="interlanguage-link interwiki-sv mw-list-item"><a href="https://sv.wikipedia.org/wiki/Isotop" title="Isotop – Swedish" lang="sv" hreflang="sv" data-title="Isotop" data-language-autonym="Svenska" data-language-local-name="Swedish" class="interlanguage-link-target"><span>Svenska</span></a></li><li class="interlanguage-link interwiki-tl mw-list-item"><a href="https://tl.wikipedia.org/wiki/Isotope" title="Isotope – Tagalog" lang="tl" hreflang="tl" data-title="Isotope" data-language-autonym="Tagalog" data-language-local-name="Tagalog" class="interlanguage-link-target"><span>Tagalog</span></a></li><li class="interlanguage-link interwiki-ta mw-list-item"><a href="https://ta.wikipedia.org/wiki/%E0%AE%93%E0%AE%B0%E0%AE%BF%E0%AE%9F%E0%AE%A4%E0%AF%8D%E0%AE%A4%E0%AE%BE%E0%AE%A9%E0%AF%8D" title="ஓரிடத்தான் – Tamil" lang="ta" hreflang="ta" data-title="ஓரிடத்தான்" data-language-autonym="தமிழ்" data-language-local-name="Tamil" class="interlanguage-link-target"><span>தமிழ்</span></a></li><li class="interlanguage-link interwiki-kab mw-list-item"><a href="https://kab.wikipedia.org/wiki/Anyat" title="Anyat – Kabyle" lang="kab" hreflang="kab" data-title="Anyat" data-language-autonym="Taqbaylit" data-language-local-name="Kabyle" class="interlanguage-link-target"><span>Taqbaylit</span></a></li><li class="interlanguage-link interwiki-te mw-list-item"><a href="https://te.wikipedia.org/wiki/%E0%B0%90%E0%B0%B8%E0%B1%8B%E0%B0%9F%E0%B1%8B%E0%B0%AA%E0%B1%81%E0%B0%B2%E0%B1%81" title="ఐసోటోపులు – Telugu" lang="te" hreflang="te" data-title="ఐసోటోపులు" data-language-autonym="తెలుగు" data-language-local-name="Telugu" class="interlanguage-link-target"><span>తెలుగు</span></a></li><li class="interlanguage-link interwiki-th mw-list-item"><a href="https://th.wikipedia.org/wiki/%E0%B9%84%E0%B8%AD%E0%B9%82%E0%B8%8B%E0%B9%82%E0%B8%97%E0%B8%9B" title="ไอโซโทป – Thai" lang="th" hreflang="th" data-title="ไอโซโทป" data-language-autonym="ไทย" data-language-local-name="Thai" class="interlanguage-link-target"><span>ไทย</span></a></li><li class="interlanguage-link interwiki-tr mw-list-item"><a href="https://tr.wikipedia.org/wiki/%C4%B0zotop" title="İzotop – Turkish" lang="tr" hreflang="tr" data-title="İzotop" data-language-autonym="Türkçe" data-language-local-name="Turkish" 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%86%D0%B7%D0%BE%D1%82%D0%BE%D0%BF%D0%B8" title="Ізотопи – Ukrainian" lang="uk" hreflang="uk" data-title="Ізотопи" data-language-autonym="Українська" data-language-local-name="Ukrainian" 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/%DB%81%D9%85_%D8%AC%D8%A7" title="ہم جا – Urdu" lang="ur" hreflang="ur" data-title="ہم جا" data-language-autonym="اردو" data-language-local-name="Urdu" class="interlanguage-link-target"><span>اردو</span></a></li><li class="interlanguage-link interwiki-za mw-list-item"><a href="https://za.wikipedia.org/wiki/Doengzvihsuq" title="Doengzvihsuq – Zhuang" lang="za" hreflang="za" data-title="Doengzvihsuq" data-language-autonym="Vahcuengh" data-language-local-name="Zhuang" class="interlanguage-link-target"><span>Vahcuengh</span></a></li><li class="interlanguage-link interwiki-vec mw-list-item"><a href="https://vec.wikipedia.org/wiki/Ix%C3%B2topo" title="Ixòtopo – Venetian" lang="vec" hreflang="vec" data-title="Ixòtopo" data-language-autonym="Vèneto" data-language-local-name="Venetian" class="interlanguage-link-target"><span>Vèneto</span></a></li><li class="interlanguage-link interwiki-vep mw-list-item"><a href="https://vep.wikipedia.org/wiki/Izotop" title="Izotop – Veps" lang="vep" hreflang="vep" data-title="Izotop" data-language-autonym="Vepsän kel’" data-language-local-name="Veps" class="interlanguage-link-target"><span>Vepsän kel’</span></a></li><li class="interlanguage-link interwiki-vi mw-list-item"><a href="https://vi.wikipedia.org/wiki/%C4%90%E1%BB%93ng_v%E1%BB%8B" title="Đồng vị – Vietnamese" lang="vi" hreflang="vi" data-title="Đồng vị" data-language-autonym="Tiếng Việt" data-language-local-name="Vietnamese" class="interlanguage-link-target"><span>Tiếng Việt</span></a></li><li class="interlanguage-link interwiki-zh-classical mw-list-item"><a href="https://zh-classical.wikipedia.org/wiki/%E5%90%8C%E4%BD%8D%E7%B4%A0" title="同位素 – Literary Chinese" lang="lzh" hreflang="lzh" data-title="同位素" data-language-autonym="文言" data-language-local-name="Literary Chinese" class="interlanguage-link-target"><span>文言</span></a></li><li class="interlanguage-link interwiki-war mw-list-item"><a href="https://war.wikipedia.org/wiki/Isotopo" title="Isotopo – Waray" lang="war" hreflang="war" data-title="Isotopo" 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%90%8C%E4%BD%8D%E7%B4%A0" title="同位素 – Wu" lang="wuu" hreflang="wuu" data-title="同位素" data-language-autonym="吴语" 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data-unpinned-container-id="vector-appearance-unpinned-container" > <div class="vector-pinnable-header-label">Appearance</div> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-pin-button" data-event-name="pinnable-header.vector-appearance.pin">move to sidebar</button> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-unpin-button" data-event-name="pinnable-header.vector-appearance.unpin">hide</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">From Simple English Wikipedia, the free encyclopedia</div> </div> <div id="contentSub"><div id="mw-content-subtitle"><span class="mw-redirectedfrom">(Redirected from <a href="/w/index.php?title=Isotopes&redirect=no" class="mw-redirect" title="Isotopes">Isotopes</a>)</span></div></div> <div id="mw-content-text" class="mw-body-content"><div class="mw-content-ltr mw-parser-output" lang="en" dir="ltr"><figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:Blausen_0530_HydrogenIsotopes.png" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/1/1c/Blausen_0530_HydrogenIsotopes.png/220px-Blausen_0530_HydrogenIsotopes.png" decoding="async" width="220" height="105" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/1/1c/Blausen_0530_HydrogenIsotopes.png/330px-Blausen_0530_HydrogenIsotopes.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/1/1c/Blausen_0530_HydrogenIsotopes.png/440px-Blausen_0530_HydrogenIsotopes.png 2x" data-file-width="1600" data-file-height="762" /></a><figcaption>Isotopes of Hydrogen</figcaption></figure> <p>The <a href="/wiki/Atom" title="Atom">atoms</a> of a <a href="/wiki/Chemical_element" title="Chemical element">chemical element</a> can exist in different types that have very similar behavior, but weigh different amounts. These are called <b>isotopes</b> of the element. Atoms of the same element have the same number of <a href="/wiki/Proton" title="Proton">protons</a>, but different isotopes have different numbers of <a href="/wiki/Neutron" title="Neutron">neutrons</a>. Different isotopes of the same element have different masses because they have a different number of neutrons. <a href="/wiki/Mass" title="Mass">Mass</a> is the word for how much <a href="/wiki/Substance" title="Substance">substance</a> (or <a href="/wiki/Matter" title="Matter">matter</a>) something has. Things with different masses also have different <a href="/wiki/Weight" title="Weight">weights</a>. </p><p>Some isotopes are not stable so they change to another isotope or element by <a href="/wiki/Radioactive_decay" title="Radioactive decay">radioactive decay</a>. These are called <a href="/wiki/Radionuclide" title="Radionuclide">radioactive isotopes</a>. Others are not radioactive. These are called stable isotopes. </p><p>Atoms of the same <a href="/wiki/Chemical_element" title="Chemical element">element</a> have the same number of <a href="/wiki/Proton" title="Proton">protons</a>, which is called the <a href="/wiki/Atomic_number" title="Atomic number">atomic number</a>. Different isotopes of an element have different numbers of <a href="/wiki/Neutrons" class="mw-redirect" title="Neutrons">neutrons</a>. As a result, they also have different <a href="/wiki/Mass_number" title="Mass number">mass numbers</a>, which is the number of protons plus the number of neutrons. An isotope is usually named by giving the element and the mass number. For example, the symbol for carbon is C and all carbon atoms have 6 protons. The most common isotope of carbon also has 6 neutrons, giving a mass number of 12, and it is written <a href="/wiki/Carbon-12" title="Carbon-12">carbon-12</a> or <sup>12</sup>C. The isotope of carbon that has 8 neutrons is written <a href="/wiki/Carbon-14" title="Carbon-14">carbon-14</a> or <sup>14</sup>C. </p><p>The word "isotope", meaning "at the same place", comes from the fact that isotopes of the same element are at the same place on the <a href="/wiki/Periodic_table" title="Periodic table">periodic table</a>. </p> <div class="mw-heading mw-heading2"><h2 id="Chemical_properties">Chemical properties</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Isotope&veaction=edit&section=1" title="Change section: Chemical properties" class="mw-editsection-visualeditor"><span>change</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Isotope&action=edit&section=1" title="Edit section's source code: Chemical properties"><span>change source</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>In any <a href="/wiki/Neutral_particle" title="Neutral particle">neutral</a> <a href="/wiki/Atom" title="Atom">atom</a>, the number of <a href="/wiki/Electron" title="Electron">electrons</a> is the same as the number of <a href="/wiki/Proton" title="Proton">protons</a>. As a result, isotopes of the same element also have the same number of electrons and the same <a href="/w/index.php?title=Electronic_structure&action=edit&redlink=1" class="new" title="Electronic structure (not yet started)">electronic structure</a>. The way an atom acts is decided by its electronic structure, so isotopes of the same element have almost the same chemical behavior, such as the molecules it can form. It is very difficult to separate the isotopes of an element from a mixture of different isotopes because of how similar this behavior is. </p><p>Heavier isotopes react chemically more slowly than lighter isotopes of the same element. This "mass effect" is large for <a href="/wiki/Protium" class="mw-redirect" title="Protium">protium</a> (<sup>1</sup>H) and <a href="/wiki/Deuterium" title="Deuterium">deuterium</a> (<sup>2</sup>H), because deuterium has twice the mass of protium. For heavier elements, the relative <a href="/wiki/Atomic_weight" class="mw-redirect" title="Atomic weight">atomic weight</a> ratio between isotopes is much less, so the mass effect is usually small. </p> <div class="mw-heading mw-heading2"><h2 id="Stability">Stability</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Isotope&veaction=edit&section=2" title="Change section: Stability" class="mw-editsection-visualeditor"><span>change</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Isotope&action=edit&section=2" title="Edit section's source code: Stability"><span>change source</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Some isotopes are not stable so they change to a different isotope or element by <a href="/wiki/Radioactive_decay" title="Radioactive decay">radioactive decay</a>. These are called unstable isotopes, or <a href="/wiki/Radionuclide" title="Radionuclide">radioactive isotopes</a>. The average time it takes an isotope to decay is called the <a href="/wiki/Half-life" class="mw-disambig" title="Half-life">half-life</a>. Other isotopes do not decay so they are not radioactive. They are called stable isotopes. </p><p>Every atom has an <a href="/wiki/Atomic_nucleus" title="Atomic nucleus">atomic nucleus</a>, which is made from protons and neutrons that are held together by the <a href="/wiki/Nuclear_force" title="Nuclear force">nuclear force</a>. Because protons have positive <a href="/wiki/Electrical_charge" class="mw-redirect" title="Electrical charge">electrical charge</a>, they repel each other. Neutrons are neutral and they stabilize the nucleus. The neutrons hold the protons slightly apart. This reduces the <a href="/wiki/Coulomb%27s_law" title="Coulomb's law">electrostatic repulsion</a> between the protons, so the nuclear force can hold the protons and neutrons together. One or more neutrons are necessary for two or more protons to bind into a nucleus. As the number of protons increases, so does the number of neutrons needed to have a stable nucleus. </p><p>Some elements only have a single isotope that is stable. For example, <a href="/wiki/Fluorine" title="Fluorine">fluorine</a>-19 (<sup>19</sup>F) is the only stable isotope of fluorine. The other isotopes of fluorine decay rapidly so they are not found in nature. Other elements have many stable isotopes. For example, <a href="/wiki/Xenon" title="Xenon">xenon</a> has seven stable isotopes. It also has two isotopes that decay very slowly that are found in nature. The largest number of stable isotopes for any element is ten, for the element <a href="/wiki/Tin" title="Tin">tin</a>. Some elements do not have any stable isotopes, such as <a href="/wiki/Curium" title="Curium">curium</a>. These only exist on Earth because they are created in <a href="/wiki/Nuclear_reactor" title="Nuclear reactor">nuclear reactors</a>, <a href="/wiki/Nuclear_explosion" title="Nuclear explosion">nuclear explosions</a>, or <a href="/wiki/Particle_accelerator" title="Particle accelerator">particle accelerators</a>. </p><p>Some unstable isotopes exist naturally on <a href="/wiki/Earth" title="Earth">Earth</a> because they have a very long half-life. For example, <a href="/wiki/Uranium" title="Uranium">uranium</a>-238 has a half-life of 4468 million years. The half life of <a href="/wiki/Radium" title="Radium">radium</a>-226 is only 1600 years, and it is found in nature because it is constantly forming from the decay of uranium-238. </p><p>Hydrogen has three common isotopes. The most common isotope of hydrogen is called protium (<sup>1</sup>H), which has one proton and no neutrons. A hydrogen atom that has a proton and a neutron (atomic mass of 2) is called deuterium (<sup>2</sup>H). Hydrogen with one proton and two neutrons (atomic mass of 3) is called <a href="/wiki/Tritium" title="Tritium">tritium</a> (<sup>3</sup>H). Protium and deuterium are stable isotopes, while tritium is a radioactive isotope. </p><p>The heaviest elements in the <a href="/wiki/Periodic_table" title="Periodic table">periodic table</a> are all radioactive. All of the isotopes of <a href="/wiki/Radon" title="Radon">radon</a>, <a href="/wiki/Thorium" title="Thorium">thorium</a>, and <a href="/wiki/Uranium" title="Uranium">uranium</a> are radioactive, since they are very heavy. This is because the nuclear forces inside the <a href="/wiki/Nucleus_(physics)" class="mw-redirect" title="Nucleus (physics)">nucleus</a> of the <a href="/wiki/Atom" title="Atom">atom</a> cannot hold together all the protons and neutrons. </p> <div class="mw-heading mw-heading2"><h2 id="Related_pages">Related pages</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Isotope&veaction=edit&section=3" title="Change section: Related pages" class="mw-editsection-visualeditor"><span>change</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Isotope&action=edit&section=3" title="Edit section's source code: Related pages"><span>change source</span></a><span class="mw-editsection-bracket">]</span></span></div> <ul><li><a href="/wiki/Isotope_electrochemistry" title="Isotope electrochemistry">Isotope electrochemistry</a></li> <li><a href="/wiki/Radionuclide" title="Radionuclide">Radionuclide</a></li></ul>    </div><noscript><img src="https://login.wikimedia.org/wiki/Special:CentralAutoLogin/start?type=1x1" alt="" width="1" height="1" style="border: none; position: absolute;"></noscript> <div class="printfooter" data-nosnippet="">Retrieved from "<a dir="ltr" href="https://simple.wikipedia.org/w/index.php?title=Isotope&oldid=9280434">https://simple.wikipedia.org/w/index.php?title=Isotope&oldid=9280434</a>"</div></div> <div id="catlinks" class="catlinks" data-mw="interface"><div id="mw-normal-catlinks" class="mw-normal-catlinks"><a href="/wiki/Special:Categories" title="Special:Categories">Categories</a>: <ul><li><a href="/wiki/Category:Isotopes" title="Category:Isotopes">Isotopes</a></li><li><a href="/wiki/Category:Nuclear_physics" title="Category:Nuclear physics">Nuclear physics</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"> This page was last changed on 2 January 2024, at 17:04.</li> <li id="footer-info-copyright">Text is available under the <a rel="nofollow" class="external text" href="//creativecommons.org/licenses/by-sa/4.0/">Creative Commons Attribution-ShareAlike License</a> and the <a href="/wiki/Wikipedia:Text_of_the_GNU_Free_Documentation_License" title="Wikipedia:Text of the GNU Free Documentation License">GFDL</a>; additional terms may apply. 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