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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="Sivusto"> <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="Sisällysluettelo" 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">Sisällysluettelo</h2> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-pin-button" data-event-name="pinnable-header.vector-toc.pin">siirrä sivupalkkiin</button> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-unpin-button" data-event-name="pinnable-header.vector-toc.unpin">piilota</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">Johdanto</div> </a> </li> <li id="toc-Ominaisuudet" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Ominaisuudet"> <div class="vector-toc-text"> <span class="vector-toc-numb">1</span> <span>Ominaisuudet</span> </div> </a> <ul id="toc-Ominaisuudet-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Käyttö" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Käyttö"> <div class="vector-toc-text"> <span class="vector-toc-numb">2</span> <span>Käyttö</span> </div> </a> <ul id="toc-Käyttö-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Historia_ja_nimeäminen" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Historia_ja_nimeäminen"> <div class="vector-toc-text"> <span class="vector-toc-numb">3</span> <span>Historia ja nimeäminen</span> </div> </a> <ul id="toc-Historia_ja_nimeäminen-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Katso_myös" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Katso_myös"> <div class="vector-toc-text"> <span class="vector-toc-numb">4</span> <span>Katso myös</span> </div> </a> <ul id="toc-Katso_myös-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Lähteet" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Lähteet"> <div class="vector-toc-text"> <span class="vector-toc-numb">5</span> <span>Lähteet</span> </div> </a> <ul id="toc-Lähteet-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Aiheesta_muualla" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Aiheesta_muualla"> <div class="vector-toc-text"> <span class="vector-toc-numb">6</span> <span>Aiheesta muualla</span> </div> </a> <ul id="toc-Aiheesta_muualla-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="Sisällysluettelo" class="vector-toc-landmark"> <div id="vector-page-titlebar-toc" class="vector-dropdown vector-page-titlebar-toc vector-button-flush-left" title="Sisällysluettelo" > <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="Vaihda sisällysluettelo" > <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">Vaihda sisällysluettelo</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">Happi</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="Mene artikkeliin toisella kielellä. Saatavilla 210 kielellä" > <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-210" 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">210 kieltä</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/Suurstof" title="Suurstof — afrikaans" lang="af" hreflang="af" data-title="Suurstof" data-language-autonym="Afrikaans" data-language-local-name="afrikaans" class="interlanguage-link-target"><span>Afrikaans</span></a></li><li class="interlanguage-link interwiki-als mw-list-item"><a href="https://als.wikipedia.org/wiki/Sauerstoff" title="Sauerstoff — sveitsinsaksa" lang="gsw" hreflang="gsw" data-title="Sauerstoff" data-language-autonym="Alemannisch" data-language-local-name="sveitsinsaksa" class="interlanguage-link-target"><span>Alemannisch</span></a></li><li class="interlanguage-link interwiki-am mw-list-item"><a href="https://am.wikipedia.org/wiki/%E1%8A%A6%E1%8A%AD%E1%88%B2%E1%8C%85%E1%8A%95" title="ኦክሲጅን — amhara" lang="am" hreflang="am" data-title="ኦክሲጅን" data-language-autonym="አማርኛ" data-language-local-name="amhara" class="interlanguage-link-target"><span>አማርኛ</span></a></li><li class="interlanguage-link interwiki-smn mw-list-item"><a href="https://smn.wikipedia.org/wiki/Happi" title="Happi — inarinsaame" lang="smn" hreflang="smn" data-title="Happi" data-language-autonym="Anarâškielâ" data-language-local-name="inarinsaame" class="interlanguage-link-target"><span>Anarâškielâ</span></a></li><li class="interlanguage-link interwiki-anp mw-list-item"><a href="https://anp.wikipedia.org/wiki/%E0%A4%91%E0%A4%95%E0%A5%8D%E0%A4%B8%E0%A5%80%E0%A4%9C%E0%A4%A8" title="ऑक्सीजन — angika" lang="anp" hreflang="anp" data-title="ऑक्सीजन" data-language-autonym="अंगिका" data-language-local-name="angika" class="interlanguage-link-target"><span>अंगिका</span></a></li><li class="interlanguage-link interwiki-ang mw-list-item"><a href="https://ang.wikipedia.org/wiki/%C3%86%C3%B0mlyft" title="Æðmlyft — muinaisenglanti" lang="ang" hreflang="ang" data-title="Æðmlyft" data-language-autonym="Ænglisc" data-language-local-name="muinaisenglanti" class="interlanguage-link-target"><span>Ænglisc</span></a></li><li class="interlanguage-link interwiki-ar badge-Q17437796 badge-featuredarticle mw-list-item" title="suositeltu artikkeli"><a href="https://ar.wikipedia.org/wiki/%D8%A3%D9%83%D8%B3%D8%AC%D9%8A%D9%86" title="أكسجين — arabia" lang="ar" hreflang="ar" data-title="أكسجين" data-language-autonym="العربية" data-language-local-name="arabia" 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/Oxicheno" title="Oxicheno — aragonia" lang="an" hreflang="an" data-title="Oxicheno" data-language-autonym="Aragonés" data-language-local-name="aragonia" class="interlanguage-link-target"><span>Aragonés</span></a></li><li class="interlanguage-link interwiki-hyw mw-list-item"><a href="https://hyw.wikipedia.org/wiki/%D4%B9%D5%A9%D5%B8%D6%82%D5%A1%D5%AE%D5%AB%D5%B6" title="Թթուածին — Western Armenian" lang="hyw" hreflang="hyw" data-title="Թթուածին" data-language-autonym="Արեւմտահայերէն" data-language-local-name="Western Armenian" class="interlanguage-link-target"><span>Արեւմտահայերէն</span></a></li><li class="interlanguage-link interwiki-roa-rup mw-list-item"><a href="https://roa-rup.wikipedia.org/wiki/Oxigenu" title="Oxigenu — aromania" lang="rup" hreflang="rup" data-title="Oxigenu" data-language-autonym="Armãneashti" data-language-local-name="aromania" class="interlanguage-link-target"><span>Armãneashti</span></a></li><li class="interlanguage-link interwiki-as mw-list-item"><a href="https://as.wikipedia.org/wiki/%E0%A6%85%E0%A6%AE%E0%A7%8D%E0%A6%B2%E0%A6%9C%E0%A6%BE%E0%A6%A8" title="অম্লজান — assami" lang="as" hreflang="as" data-title="অম্লজান" data-language-autonym="অসমীয়া" data-language-local-name="assami" class="interlanguage-link-target"><span>অসমীয়া</span></a></li><li class="interlanguage-link interwiki-ast mw-list-item"><a href="https://ast.wikipedia.org/wiki/Ox%C3%ADxenu" title="Oxíxenu — asturia" lang="ast" hreflang="ast" data-title="Oxíxenu" data-language-autonym="Asturianu" data-language-local-name="asturia" class="interlanguage-link-target"><span>Asturianu</span></a></li><li class="interlanguage-link interwiki-awa mw-list-item"><a href="https://awa.wikipedia.org/wiki/%E0%A4%91%E0%A4%95%E0%A5%8D%E0%A4%B8%E0%A5%80%E0%A4%9C%E0%A4%A8" title="ऑक्सीजन — awadhi" lang="awa" hreflang="awa" data-title="ऑक्सीजन" data-language-autonym="अवधी" data-language-local-name="awadhi" class="interlanguage-link-target"><span>अवधी</span></a></li><li class="interlanguage-link interwiki-gn mw-list-item"><a href="https://gn.wikipedia.org/wiki/Tatarapo" title="Tatarapo — guarani" lang="gn" hreflang="gn" data-title="Tatarapo" data-language-autonym="Avañe'ẽ" data-language-local-name="guarani" class="interlanguage-link-target"><span>Avañe'ẽ</span></a></li><li class="interlanguage-link interwiki-az mw-list-item"><a href="https://az.wikipedia.org/wiki/Oksigen" title="Oksigen — azeri" lang="az" hreflang="az" data-title="Oksigen" data-language-autonym="Azərbaycanca" data-language-local-name="azeri" class="interlanguage-link-target"><span>Azərbaycanca</span></a></li><li class="interlanguage-link interwiki-azb mw-list-item"><a href="https://azb.wikipedia.org/wiki/%D8%A7%D9%88%DA%A9%D8%B3%DB%8C%DA%98%D9%86" title="اوکسیژن — South Azerbaijani" lang="azb" hreflang="azb" data-title="اوکسیژن" data-language-autonym="تۆرکجه" data-language-local-name="South Azerbaijani" class="interlanguage-link-target"><span>تۆرکجه</span></a></li><li class="interlanguage-link interwiki-id mw-list-item"><a href="https://id.wikipedia.org/wiki/Oksigen" title="Oksigen — indonesia" lang="id" hreflang="id" data-title="Oksigen" data-language-autonym="Bahasa Indonesia" data-language-local-name="indonesia" class="interlanguage-link-target"><span>Bahasa Indonesia</span></a></li><li class="interlanguage-link interwiki-ms mw-list-item"><a href="https://ms.wikipedia.org/wiki/Oksigen" title="Oksigen — malaiji" lang="ms" hreflang="ms" data-title="Oksigen" data-language-autonym="Bahasa Melayu" data-language-local-name="malaiji" class="interlanguage-link-target"><span>Bahasa Melayu</span></a></li><li class="interlanguage-link interwiki-ban mw-list-item"><a href="https://ban.wikipedia.org/wiki/Oksig%C3%A9n" title="Oksigén — bali" lang="ban" hreflang="ban" data-title="Oksigén" data-language-autonym="Basa Bali" data-language-local-name="bali" 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%85%E0%A6%95%E0%A7%8D%E0%A6%B8%E0%A6%BF%E0%A6%9C%E0%A7%87%E0%A6%A8" title="অক্সিজেন — bengali" lang="bn" hreflang="bn" data-title="অক্সিজেন" data-language-autonym="বাংলা" data-language-local-name="bengali" 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/Sng-s%C3%B2%CD%98" title="Sng-sò͘ — min nan -kiina" lang="nan" hreflang="nan" data-title="Sng-sò͘" data-language-autonym="閩南語 / Bân-lâm-gú" data-language-local-name="min nan -kiina" class="interlanguage-link-target"><span>閩南語 / Bân-lâm-gú</span></a></li><li class="interlanguage-link interwiki-ba mw-list-item"><a href="https://ba.wikipedia.org/wiki/%D0%9A%D0%B8%D1%81%D0%BB%D0%BE%D1%80%D0%BE%D0%B4" title="Кислород — baškiiri" lang="ba" hreflang="ba" data-title="Кислород" data-language-autonym="Башҡортса" data-language-local-name="baškiiri" class="interlanguage-link-target"><span>Башҡортса</span></a></li><li class="interlanguage-link interwiki-be mw-list-item"><a href="https://be.wikipedia.org/wiki/%D0%9A%D1%96%D1%81%D0%BB%D0%B0%D1%80%D0%BE%D0%B4" title="Кісларод — valkovenäjä" lang="be" hreflang="be" data-title="Кісларод" data-language-autonym="Беларуская" data-language-local-name="valkovenäjä" 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%A2%D0%BB%D0%B5%D0%BD" title="Тлен — Belarusian (Taraškievica orthography)" lang="be-tarask" hreflang="be-tarask" data-title="Тлен" 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%91%E0%A4%95%E0%A5%8D%E0%A4%B8%E0%A5%80%E0%A4%9C%E0%A4%A8" title="ऑक्सीजन — Bhojpuri" lang="bh" hreflang="bh" data-title="ऑक्सीजन" 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/Oksiheno" title="Oksiheno — Central Bikol" lang="bcl" hreflang="bcl" data-title="Oksiheno" 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-bar mw-list-item"><a href="https://bar.wikipedia.org/wiki/Sauastoff" title="Sauastoff — baijeri" lang="bar" hreflang="bar" data-title="Sauastoff" data-language-autonym="Boarisch" data-language-local-name="baijeri" class="interlanguage-link-target"><span>Boarisch</span></a></li><li class="interlanguage-link interwiki-bo mw-list-item"><a href="https://bo.wikipedia.org/wiki/%E0%BD%82%E0%BD%A6%E0%BD%BC%E0%BC%8B%E0%BD%A2%E0%BE%B3%E0%BD%B4%E0%BD%84%E0%BC%8B%E0%BC%8D" title="གསོ་རླུང་། — tiibet" lang="bo" hreflang="bo" data-title="གསོ་རླུང་།" data-language-autonym="བོད་ཡིག" data-language-local-name="tiibet" class="interlanguage-link-target"><span>བོད་ཡིག</span></a></li><li class="interlanguage-link interwiki-bs mw-list-item"><a href="https://bs.wikipedia.org/wiki/Kisik" title="Kisik — bosnia" lang="bs" hreflang="bs" data-title="Kisik" data-language-autonym="Bosanski" data-language-local-name="bosnia" 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/Oksigen" title="Oksigen — bretoni" lang="br" hreflang="br" data-title="Oksigen" data-language-autonym="Brezhoneg" data-language-local-name="bretoni" class="interlanguage-link-target"><span>Brezhoneg</span></a></li><li class="interlanguage-link interwiki-bg mw-list-item"><a href="https://bg.wikipedia.org/wiki/%D0%9A%D0%B8%D1%81%D0%BB%D0%BE%D1%80%D0%BE%D0%B4" title="Кислород — bulgaria" lang="bg" hreflang="bg" data-title="Кислород" data-language-autonym="Български" data-language-local-name="bulgaria" class="interlanguage-link-target"><span>Български</span></a></li><li class="interlanguage-link interwiki-bxr mw-list-item"><a href="https://bxr.wikipedia.org/wiki/%D0%A5%D2%AF%D1%88%D1%8D%D0%BB%D1%82%D2%AF%D1%80%D1%8D%D0%B3%D1%88%D1%8D" title="Хүшэлтүрэгшэ — Russia Buriat" lang="bxr" hreflang="bxr" data-title="Хүшэлтүрэгшэ" data-language-autonym="Буряад" data-language-local-name="Russia Buriat" class="interlanguage-link-target"><span>Буряад</span></a></li><li class="interlanguage-link interwiki-ca mw-list-item"><a href="https://ca.wikipedia.org/wiki/Oxigen" title="Oxigen — katalaani" lang="ca" hreflang="ca" data-title="Oxigen" data-language-autonym="Català" data-language-local-name="katalaani" class="interlanguage-link-target"><span>Català</span></a></li><li class="interlanguage-link interwiki-ceb mw-list-item"><a href="https://ceb.wikipedia.org/wiki/Oksihena" title="Oksihena — cebuano" lang="ceb" hreflang="ceb" data-title="Oksihena" data-language-autonym="Cebuano" data-language-local-name="cebuano" class="interlanguage-link-target"><span>Cebuano</span></a></li><li class="interlanguage-link interwiki-cv mw-list-item"><a href="https://cv.wikipedia.org/wiki/%D0%99%D3%B3%C3%A7%D0%B0%D0%BC%C4%83%D1%88" title="Йӳçамăш — tšuvassi" lang="cv" hreflang="cv" data-title="Йӳçамăш" data-language-autonym="Чӑвашла" data-language-local-name="tšuvassi" class="interlanguage-link-target"><span>Чӑвашла</span></a></li><li class="interlanguage-link interwiki-cs mw-list-item"><a href="https://cs.wikipedia.org/wiki/Kysl%C3%ADk" title="Kyslík — tšekki" lang="cs" hreflang="cs" data-title="Kyslík" data-language-autonym="Čeština" data-language-local-name="tšekki" class="interlanguage-link-target"><span>Čeština</span></a></li><li class="interlanguage-link interwiki-co mw-list-item"><a href="https://co.wikipedia.org/wiki/Ossigenu" title="Ossigenu — korsika" lang="co" hreflang="co" data-title="Ossigenu" data-language-autonym="Corsu" data-language-local-name="korsika" class="interlanguage-link-target"><span>Corsu</span></a></li><li class="interlanguage-link interwiki-cy mw-list-item"><a href="https://cy.wikipedia.org/wiki/Ocsigen" title="Ocsigen — kymri" lang="cy" hreflang="cy" data-title="Ocsigen" data-language-autonym="Cymraeg" data-language-local-name="kymri" class="interlanguage-link-target"><span>Cymraeg</span></a></li><li class="interlanguage-link interwiki-da badge-Q17559452 badge-recommendedarticle mw-list-item" title="lupaava artikkeli"><a href="https://da.wikipedia.org/wiki/Ilt" title="Ilt — tanska" lang="da" hreflang="da" data-title="Ilt" data-language-autonym="Dansk" data-language-local-name="tanska" 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%A4%D9%83%D8%B3%D9%8A%D8%AC%D9%8A%D9%86" title="ؤكسيجين — marokonarabia" lang="ary" hreflang="ary" data-title="ؤكسيجين" data-language-autonym="الدارجة" data-language-local-name="marokonarabia" class="interlanguage-link-target"><span>الدارجة</span></a></li><li class="interlanguage-link interwiki-de badge-Q17437798 badge-goodarticle mw-list-item" title="hyvä artikkeli"><a href="https://de.wikipedia.org/wiki/Sauerstoff" title="Sauerstoff — saksa" lang="de" hreflang="de" data-title="Sauerstoff" data-language-autonym="Deutsch" data-language-local-name="saksa" class="interlanguage-link-target"><span>Deutsch</span></a></li><li class="interlanguage-link interwiki-nv mw-list-item"><a href="https://nv.wikipedia.org/wiki/N%C3%AD%C5%82ch%CA%BCi_y%C3%A1%CA%BC%C3%A1t%CA%BC%C3%A9ehii" title="Níłchʼi yáʼátʼéehii — navajo" lang="nv" hreflang="nv" data-title="Níłchʼi yáʼátʼéehii" data-language-autonym="Diné bizaad" data-language-local-name="navajo" class="interlanguage-link-target"><span>Diné bizaad</span></a></li><li class="interlanguage-link interwiki-et mw-list-item"><a href="https://et.wikipedia.org/wiki/Hapnik" title="Hapnik — viro" lang="et" hreflang="et" data-title="Hapnik" data-language-autonym="Eesti" data-language-local-name="viro" 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%9F%CE%BE%CF%85%CE%B3%CF%8C%CE%BD%CE%BF" title="Οξυγόνο — kreikka" lang="el" hreflang="el" data-title="Οξυγόνο" data-language-autonym="Ελληνικά" data-language-local-name="kreikka" class="interlanguage-link-target"><span>Ελληνικά</span></a></li><li class="interlanguage-link interwiki-en badge-Q17437796 badge-featuredarticle mw-list-item" title="suositeltu artikkeli"><a href="https://en.wikipedia.org/wiki/Oxygen" title="Oxygen — englanti" lang="en" hreflang="en" data-title="Oxygen" data-language-autonym="English" data-language-local-name="englanti" class="interlanguage-link-target"><span>English</span></a></li><li class="interlanguage-link interwiki-myv mw-list-item"><a href="https://myv.wikipedia.org/wiki/%D0%A7%D0%B0%D0%BF%D0%B0%D0%BC%D0%BE_%D1%87%D0%B0%D1%87%D1%82%D1%8B%D0%B9" title="Чапамо чачтый — ersä" lang="myv" hreflang="myv" data-title="Чапамо чачтый" data-language-autonym="Эрзянь" data-language-local-name="ersä" class="interlanguage-link-target"><span>Эрзянь</span></a></li><li class="interlanguage-link interwiki-es badge-Q17437796 badge-featuredarticle mw-list-item" title="suositeltu artikkeli"><a href="https://es.wikipedia.org/wiki/Ox%C3%ADgeno" title="Oxígeno — espanja" lang="es" hreflang="es" data-title="Oxígeno" data-language-autonym="Español" data-language-local-name="espanja" 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/Oksigeno" title="Oksigeno — esperanto" lang="eo" hreflang="eo" data-title="Oksigeno" data-language-autonym="Esperanto" data-language-local-name="esperanto" class="interlanguage-link-target"><span>Esperanto</span></a></li><li class="interlanguage-link interwiki-ext mw-list-item"><a href="https://ext.wikipedia.org/wiki/Oss%C3%ADgenu" title="Ossígenu — extremadura" lang="ext" hreflang="ext" data-title="Ossígenu" data-language-autonym="Estremeñu" data-language-local-name="extremadura" class="interlanguage-link-target"><span>Estremeñu</span></a></li><li class="interlanguage-link interwiki-eu mw-list-item"><a href="https://eu.wikipedia.org/wiki/Oxigeno" title="Oxigeno — baski" lang="eu" hreflang="eu" data-title="Oxigeno" data-language-autonym="Euskara" data-language-local-name="baski" class="interlanguage-link-target"><span>Euskara</span></a></li><li class="interlanguage-link interwiki-fa badge-Q17437796 badge-featuredarticle mw-list-item" title="suositeltu artikkeli"><a href="https://fa.wikipedia.org/wiki/%D8%A7%DA%A9%D8%B3%DB%8C%DA%98%D9%86" title="اکسیژن — persia" lang="fa" hreflang="fa" data-title="اکسیژن" data-language-autonym="فارسی" data-language-local-name="persia" class="interlanguage-link-target"><span>فارسی</span></a></li><li class="interlanguage-link interwiki-hif mw-list-item"><a href="https://hif.wikipedia.org/wiki/Oxygen" title="Oxygen — fidžinhindi" lang="hif" hreflang="hif" data-title="Oxygen" data-language-autonym="Fiji Hindi" data-language-local-name="fidžinhindi" class="interlanguage-link-target"><span>Fiji Hindi</span></a></li><li class="interlanguage-link interwiki-fo mw-list-item"><a href="https://fo.wikipedia.org/wiki/Oxygen" title="Oxygen — fääri" lang="fo" hreflang="fo" data-title="Oxygen" data-language-autonym="Føroyskt" data-language-local-name="fääri" 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/Oxyg%C3%A8ne" title="Oxygène — ranska" lang="fr" hreflang="fr" data-title="Oxygène" data-language-autonym="Français" data-language-local-name="ranska" class="interlanguage-link-target"><span>Français</span></a></li><li class="interlanguage-link interwiki-fy mw-list-item"><a href="https://fy.wikipedia.org/wiki/Soerstof" title="Soerstof — länsifriisi" lang="fy" hreflang="fy" data-title="Soerstof" data-language-autonym="Frysk" data-language-local-name="länsifriisi" class="interlanguage-link-target"><span>Frysk</span></a></li><li class="interlanguage-link interwiki-fur mw-list-item"><a href="https://fur.wikipedia.org/wiki/Ossigjen" title="Ossigjen — friuli" lang="fur" hreflang="fur" data-title="Ossigjen" data-language-autonym="Furlan" data-language-local-name="friuli" class="interlanguage-link-target"><span>Furlan</span></a></li><li class="interlanguage-link interwiki-ga mw-list-item"><a href="https://ga.wikipedia.org/wiki/Ocsaigin" title="Ocsaigin — iiri" lang="ga" hreflang="ga" data-title="Ocsaigin" data-language-autonym="Gaeilge" data-language-local-name="iiri" class="interlanguage-link-target"><span>Gaeilge</span></a></li><li class="interlanguage-link interwiki-gv mw-list-item"><a href="https://gv.wikipedia.org/wiki/Ocsygien" title="Ocsygien — manksi" lang="gv" hreflang="gv" data-title="Ocsygien" data-language-autonym="Gaelg" data-language-local-name="manksi" class="interlanguage-link-target"><span>Gaelg</span></a></li><li class="interlanguage-link interwiki-gd mw-list-item"><a href="https://gd.wikipedia.org/wiki/Ogsaidean" title="Ogsaidean — gaeli" lang="gd" hreflang="gd" data-title="Ogsaidean" data-language-autonym="Gàidhlig" data-language-local-name="gaeli" class="interlanguage-link-target"><span>Gàidhlig</span></a></li><li class="interlanguage-link interwiki-gl badge-Q17437796 badge-featuredarticle mw-list-item" title="suositeltu artikkeli"><a href="https://gl.wikipedia.org/wiki/Os%C3%ADxeno" title="Osíxeno — galicia" lang="gl" hreflang="gl" data-title="Osíxeno" data-language-autonym="Galego" data-language-local-name="galicia" 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/%E6%B0%A7" title="氧 — gan-kiina" lang="gan" hreflang="gan" data-title="氧" data-language-autonym="贛語" data-language-local-name="gan-kiina" class="interlanguage-link-target"><span>贛語</span></a></li><li class="interlanguage-link interwiki-ki mw-list-item"><a href="https://ki.wikipedia.org/wiki/Oxygen" title="Oxygen — kikuju" lang="ki" hreflang="ki" data-title="Oxygen" data-language-autonym="Gĩkũyũ" data-language-local-name="kikuju" class="interlanguage-link-target"><span>Gĩkũyũ</span></a></li><li class="interlanguage-link interwiki-gu mw-list-item"><a href="https://gu.wikipedia.org/wiki/%E0%AA%AA%E0%AB%8D%E0%AA%B0%E0%AA%BE%E0%AA%A3%E0%AA%B5%E0%AA%BE%E0%AA%AF%E0%AB%81_(%E0%AA%91%E0%AA%95%E0%AB%8D%E0%AA%B8%E0%AB%80%E0%AA%9C%E0%AA%A8)" title="પ્રાણવાયુ (ઑક્સીજન) — gudžarati" lang="gu" hreflang="gu" data-title="પ્રાણવાયુ (ઑક્સીજન)" data-language-autonym="ગુજરાતી" data-language-local-name="gudžarati" class="interlanguage-link-target"><span>ગુજરાતી</span></a></li><li class="interlanguage-link interwiki-gom mw-list-item"><a href="https://gom.wikipedia.org/wiki/%E0%A4%91%E0%A4%95%E0%A5%8D%E0%A4%B8%E0%A4%BF%E0%A4%9C%E0%A4%A8" title="ऑक्सिजन — Goan Konkani" lang="gom" hreflang="gom" data-title="ऑक्सिजन" data-language-autonym="गोंयची कोंकणी / Gõychi Konknni" data-language-local-name="Goan Konkani" class="interlanguage-link-target"><span>गोंयची कोंकणी / Gõychi Konknni</span></a></li><li class="interlanguage-link interwiki-hak mw-list-item"><a href="https://hak.wikipedia.org/wiki/Y%C3%B4ng" title="Yông — hakka-kiina" lang="hak" hreflang="hak" data-title="Yông" data-language-autonym="客家語 / Hak-kâ-ngî" data-language-local-name="hakka-kiina" class="interlanguage-link-target"><span>客家語 / Hak-kâ-ngî</span></a></li><li class="interlanguage-link interwiki-xal mw-list-item"><a href="https://xal.wikipedia.org/wiki/%D0%9E%D0%BA%D1%81%D0%B8%D2%97%D0%B5%D0%BD" title="Оксиҗен — kalmukki" lang="xal" hreflang="xal" data-title="Оксиҗен" data-language-autonym="Хальмг" data-language-local-name="kalmukki" class="interlanguage-link-target"><span>Хальмг</span></a></li><li class="interlanguage-link interwiki-ko mw-list-item"><a href="https://ko.wikipedia.org/wiki/%EC%82%B0%EC%86%8C" title="산소 — korea" lang="ko" hreflang="ko" data-title="산소" data-language-autonym="한국어" data-language-local-name="korea" class="interlanguage-link-target"><span>한국어</span></a></li><li class="interlanguage-link interwiki-haw mw-list-item"><a href="https://haw.wikipedia.org/wiki/%CA%BBOkikene" title="ʻOkikene — havaiji" lang="haw" hreflang="haw" data-title="ʻOkikene" data-language-autonym="Hawaiʻi" data-language-local-name="havaiji" class="interlanguage-link-target"><span>Hawaiʻi</span></a></li><li class="interlanguage-link interwiki-hy mw-list-item"><a href="https://hy.wikipedia.org/wiki/%D4%B9%D5%A9%D5%BE%D5%A1%D5%AE%D5%AB%D5%B6" title="Թթվածին — armenia" lang="hy" hreflang="hy" data-title="Թթվածին" data-language-autonym="Հայերեն" data-language-local-name="armenia" 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%91%E0%A4%95%E0%A5%8D%E0%A4%B8%E0%A5%80%E0%A4%9C%E0%A4%A8" title="ऑक्सीजन — hindi" lang="hi" hreflang="hi" data-title="ऑक्सीजन" data-language-autonym="हिन्दी" data-language-local-name="hindi" class="interlanguage-link-target"><span>हिन्दी</span></a></li><li class="interlanguage-link interwiki-hsb mw-list-item"><a href="https://hsb.wikipedia.org/wiki/Kislik" title="Kislik — yläsorbi" lang="hsb" hreflang="hsb" data-title="Kislik" data-language-autonym="Hornjoserbsce" data-language-local-name="yläsorbi" class="interlanguage-link-target"><span>Hornjoserbsce</span></a></li><li class="interlanguage-link interwiki-hr mw-list-item"><a href="https://hr.wikipedia.org/wiki/Kisik" title="Kisik — kroatia" lang="hr" hreflang="hr" data-title="Kisik" data-language-autonym="Hrvatski" data-language-local-name="kroatia" 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/Oxo" title="Oxo — ido" lang="io" hreflang="io" data-title="Oxo" data-language-autonym="Ido" data-language-local-name="ido" class="interlanguage-link-target"><span>Ido</span></a></li><li class="interlanguage-link interwiki-ilo mw-list-item"><a href="https://ilo.wikipedia.org/wiki/Oksiheno" title="Oksiheno — iloko" lang="ilo" hreflang="ilo" data-title="Oksiheno" data-language-autonym="Ilokano" data-language-local-name="iloko" class="interlanguage-link-target"><span>Ilokano</span></a></li><li class="interlanguage-link interwiki-ia mw-list-item"><a href="https://ia.wikipedia.org/wiki/Oxygeno" title="Oxygeno — interlingua" lang="ia" hreflang="ia" data-title="Oxygeno" data-language-autonym="Interlingua" data-language-local-name="interlingua" class="interlanguage-link-target"><span>Interlingua</span></a></li><li class="interlanguage-link interwiki-os mw-list-item"><a href="https://os.wikipedia.org/wiki/%D0%A2%D1%83%D0%B0%D0%B3%D0%B3%D1%83%D1%8B%D1%80" title="Туаггуыр — osseetti" lang="os" hreflang="os" data-title="Туаггуыр" data-language-autonym="Ирон" data-language-local-name="osseetti" class="interlanguage-link-target"><span>Ирон</span></a></li><li class="interlanguage-link interwiki-xh mw-list-item"><a href="https://xh.wikipedia.org/wiki/I-oxygen" title="I-oxygen — xhosa" lang="xh" hreflang="xh" data-title="I-oxygen" data-language-autonym="IsiXhosa" data-language-local-name="xhosa" class="interlanguage-link-target"><span>IsiXhosa</span></a></li><li class="interlanguage-link interwiki-zu mw-list-item"><a href="https://zu.wikipedia.org/wiki/IsOhwe" title="IsOhwe — zulu" lang="zu" hreflang="zu" data-title="IsOhwe" 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/S%C3%BArefni" title="Súrefni — islanti" lang="is" hreflang="is" data-title="Súrefni" data-language-autonym="Íslenska" data-language-local-name="islanti" 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/Ossigeno" title="Ossigeno — italia" lang="it" hreflang="it" data-title="Ossigeno" data-language-autonym="Italiano" data-language-local-name="italia" 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%97%D7%9E%D7%A6%D7%9F" title="חמצן — heprea" lang="he" hreflang="he" data-title="חמצן" data-language-autonym="עברית" data-language-local-name="heprea" 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/Oksig%C3%A8n" title="Oksigèn — jaava" lang="jv" hreflang="jv" data-title="Oksigèn" data-language-autonym="Jawa" data-language-local-name="jaava" class="interlanguage-link-target"><span>Jawa</span></a></li><li class="interlanguage-link interwiki-kbp mw-list-item"><a href="https://kbp.wikipedia.org/wiki/%C6%86k%C9%A9s%C9%A9z%C9%9Bn%C9%A9" title="Ɔkɩsɩzɛnɩ — Kabiye" lang="kbp" hreflang="kbp" data-title="Ɔkɩsɩzɛnɩ" data-language-autonym="Kabɩyɛ" data-language-local-name="Kabiye" class="interlanguage-link-target"><span>Kabɩyɛ</span></a></li><li class="interlanguage-link interwiki-kn mw-list-item"><a href="https://kn.wikipedia.org/wiki/%E0%B2%86%E0%B2%AE%E0%B3%8D%E0%B2%B2%E0%B2%9C%E0%B2%A8%E0%B2%95" title="ಆಮ್ಲಜನಕ — kannada" lang="kn" hreflang="kn" data-title="ಆಮ್ಲಜನಕ" data-language-autonym="ಕನ್ನಡ" data-language-local-name="kannada" class="interlanguage-link-target"><span>ಕನ್ನಡ</span></a></li><li class="interlanguage-link interwiki-pam mw-list-item"><a href="https://pam.wikipedia.org/wiki/Oks%C3%ADhenu" title="Oksíhenu — pampanga" lang="pam" hreflang="pam" data-title="Oksíhenu" data-language-autonym="Kapampangan" data-language-local-name="pampanga" class="interlanguage-link-target"><span>Kapampangan</span></a></li><li class="interlanguage-link interwiki-ka mw-list-item"><a href="https://ka.wikipedia.org/wiki/%E1%83%9F%E1%83%90%E1%83%9C%E1%83%92%E1%83%91%E1%83%90%E1%83%93%E1%83%98" title="ჟანგბადი — georgia" lang="ka" hreflang="ka" data-title="ჟანგბადი" data-language-autonym="ქართული" data-language-local-name="georgia" class="interlanguage-link-target"><span>ქართული</span></a></li><li class="interlanguage-link interwiki-ks mw-list-item"><a href="https://ks.wikipedia.org/wiki/%D8%A2%DA%A9%D8%B3%DB%8C%D8%AC%D9%8E%D9%86" title="آکسیجَن — kašmiri" lang="ks" hreflang="ks" data-title="آکسیجَن" data-language-autonym="कॉशुर / کٲشُر" data-language-local-name="kašmiri" class="interlanguage-link-target"><span>कॉशुर / کٲشُر</span></a></li><li class="interlanguage-link interwiki-kk mw-list-item"><a href="https://kk.wikipedia.org/wiki/%D0%9E%D1%82%D1%82%D0%B5%D0%B3%D1%96" title="Оттегі — kazakki" lang="kk" hreflang="kk" data-title="Оттегі" data-language-autonym="Қазақша" data-language-local-name="kazakki" class="interlanguage-link-target"><span>Қазақша</span></a></li><li class="interlanguage-link interwiki-kw mw-list-item"><a href="https://kw.wikipedia.org/wiki/Oksyjen" title="Oksyjen — korni" lang="kw" hreflang="kw" data-title="Oksyjen" data-language-autonym="Kernowek" data-language-local-name="korni" class="interlanguage-link-target"><span>Kernowek</span></a></li><li class="interlanguage-link interwiki-ky mw-list-item"><a href="https://ky.wikipedia.org/wiki/%D0%9A%D1%8B%D1%87%D0%BA%D1%8B%D0%BB%D1%82%D0%B5%D0%BA" title="Кычкылтек — kirgiisi" lang="ky" hreflang="ky" data-title="Кычкылтек" data-language-autonym="Кыргызча" data-language-local-name="kirgiisi" class="interlanguage-link-target"><span>Кыргызча</span></a></li><li class="interlanguage-link interwiki-mrj mw-list-item"><a href="https://mrj.wikipedia.org/wiki/%D0%9A%D0%B8%D1%81%D0%BB%D0%BE%D1%80%D0%BE%D0%B4" title="Кислород — vuorimari" lang="mrj" hreflang="mrj" data-title="Кислород" data-language-autonym="Кырык мары" data-language-local-name="vuorimari" class="interlanguage-link-target"><span>Кырык мары</span></a></li><li class="interlanguage-link interwiki-sw mw-list-item"><a href="https://sw.wikipedia.org/wiki/Oksijeni" title="Oksijeni — swahili" lang="sw" hreflang="sw" data-title="Oksijeni" data-language-autonym="Kiswahili" data-language-local-name="swahili" class="interlanguage-link-target"><span>Kiswahili</span></a></li><li class="interlanguage-link interwiki-kv mw-list-item"><a href="https://kv.wikipedia.org/wiki/%D0%A8%D0%BE%D0%BC%D0%B2%D0%B0%D1%87%D1%83%D0%B6%D1%8B%D1%81%D1%8C" title="Шомвачужысь — komi" lang="kv" hreflang="kv" data-title="Шомвачужысь" data-language-autonym="Коми" data-language-local-name="komi" class="interlanguage-link-target"><span>Коми</span></a></li><li class="interlanguage-link interwiki-ht mw-list-item"><a href="https://ht.wikipedia.org/wiki/Oksij%C3%A8n" title="Oksijèn — haiti" lang="ht" hreflang="ht" data-title="Oksijèn" data-language-autonym="Kreyòl ayisyen" data-language-local-name="haiti" class="interlanguage-link-target"><span>Kreyòl ayisyen</span></a></li><li class="interlanguage-link interwiki-gcr mw-list-item"><a href="https://gcr.wikipedia.org/wiki/Oksij%C3%A8n" title="Oksijèn — Guianan Creole" lang="gcr" hreflang="gcr" data-title="Oksijèn" data-language-autonym="Kriyòl gwiyannen" data-language-local-name="Guianan Creole" class="interlanguage-link-target"><span>Kriyòl gwiyannen</span></a></li><li class="interlanguage-link interwiki-ku mw-list-item"><a href="https://ku.wikipedia.org/wiki/Oks%C3%AEjen" title="Oksîjen — kurdi" lang="ku" hreflang="ku" data-title="Oksîjen" data-language-autonym="Kurdî" data-language-local-name="kurdi" class="interlanguage-link-target"><span>Kurdî</span></a></li><li class="interlanguage-link interwiki-lld mw-list-item"><a href="https://lld.wikipedia.org/wiki/Oss%C3%ACgen" title="Ossìgen — ladin" lang="lld" hreflang="lld" data-title="Ossìgen" data-language-autonym="Ladin" data-language-local-name="ladin" class="interlanguage-link-target"><span>Ladin</span></a></li><li class="interlanguage-link interwiki-la mw-list-item"><a href="https://la.wikipedia.org/wiki/Oxygenium" title="Oxygenium — latina" lang="la" hreflang="la" data-title="Oxygenium" data-language-autonym="Latina" data-language-local-name="latina" 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/Sk%C4%81beklis" title="Skābeklis — latvia" lang="lv" hreflang="lv" data-title="Skābeklis" data-language-autonym="Latviešu" data-language-local-name="latvia" class="interlanguage-link-target"><span>Latviešu</span></a></li><li class="interlanguage-link interwiki-lb mw-list-item"><a href="https://lb.wikipedia.org/wiki/Sauerstoff" title="Sauerstoff — luxemburg" lang="lb" hreflang="lb" data-title="Sauerstoff" data-language-autonym="Lëtzebuergesch" data-language-local-name="luxemburg" class="interlanguage-link-target"><span>Lëtzebuergesch</span></a></li><li class="interlanguage-link interwiki-lez mw-list-item"><a href="https://lez.wikipedia.org/wiki/%D0%9A%D0%B8%D1%81%D0%BB%D0%BE%D1%80%D0%BE%D0%B4" title="Кислород — lezgi" lang="lez" hreflang="lez" data-title="Кислород" data-language-autonym="Лезги" data-language-local-name="lezgi" class="interlanguage-link-target"><span>Лезги</span></a></li><li class="interlanguage-link interwiki-lt mw-list-item"><a href="https://lt.wikipedia.org/wiki/Deguonis" title="Deguonis — liettua" lang="lt" hreflang="lt" data-title="Deguonis" data-language-autonym="Lietuvių" data-language-local-name="liettua" class="interlanguage-link-target"><span>Lietuvių</span></a></li><li class="interlanguage-link interwiki-lij mw-list-item"><a href="https://lij.wikipedia.org/wiki/Oscigeno" title="Oscigeno — liguuri" lang="lij" hreflang="lij" data-title="Oscigeno" data-language-autonym="Ligure" data-language-local-name="liguuri" class="interlanguage-link-target"><span>Ligure</span></a></li><li class="interlanguage-link interwiki-li mw-list-item"><a href="https://li.wikipedia.org/wiki/Zuurstof" title="Zuurstof — limburg" lang="li" hreflang="li" data-title="Zuurstof" data-language-autonym="Limburgs" data-language-local-name="limburg" class="interlanguage-link-target"><span>Limburgs</span></a></li><li class="interlanguage-link interwiki-ln mw-list-item"><a href="https://ln.wikipedia.org/wiki/Oksij%C9%9B%CC%81n%C3%AD" title="Oksijɛ́ní — lingala" lang="ln" hreflang="ln" data-title="Oksijɛ́ní" data-language-autonym="Lingála" data-language-local-name="lingala" class="interlanguage-link-target"><span>Lingála</span></a></li><li class="interlanguage-link interwiki-lfn mw-list-item"><a href="https://lfn.wikipedia.org/wiki/Osijen" title="Osijen — lingua franca nova" lang="lfn" hreflang="lfn" data-title="Osijen" data-language-autonym="Lingua Franca Nova" data-language-local-name="lingua franca nova" class="interlanguage-link-target"><span>Lingua Franca Nova</span></a></li><li class="interlanguage-link interwiki-olo mw-list-item"><a href="https://olo.wikipedia.org/wiki/Happamehsuadu" title="Happamehsuadu — Livvi-Karelian" lang="olo" hreflang="olo" data-title="Happamehsuadu" data-language-autonym="Livvinkarjala" data-language-local-name="Livvi-Karelian" class="interlanguage-link-target"><span>Livvinkarjala</span></a></li><li class="interlanguage-link interwiki-jbo mw-list-item"><a href="https://jbo.wikipedia.org/wiki/kijno" title="kijno — lojban" lang="jbo" hreflang="jbo" data-title="kijno" 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-lmo mw-list-item"><a href="https://lmo.wikipedia.org/wiki/Os%C3%ACgeno" title="Osìgeno — lombardi" lang="lmo" hreflang="lmo" data-title="Osìgeno" data-language-autonym="Lombard" data-language-local-name="lombardi" class="interlanguage-link-target"><span>Lombard</span></a></li><li class="interlanguage-link interwiki-hu badge-Q17437798 badge-goodarticle mw-list-item" title="hyvä artikkeli"><a href="https://hu.wikipedia.org/wiki/Oxig%C3%A9n" title="Oxigén — unkari" lang="hu" hreflang="hu" data-title="Oxigén" data-language-autonym="Magyar" data-language-local-name="unkari" 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%9A%D0%B8%D1%81%D0%BB%D0%BE%D1%80%D0%BE%D0%B4" title="Кислород — makedonia" lang="mk" hreflang="mk" data-title="Кислород" data-language-autonym="Македонски" data-language-local-name="makedonia" 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/%C3%94ksizenina" title="Ôksizenina — malagassi" lang="mg" hreflang="mg" data-title="Ôksizenina" data-language-autonym="Malagasy" data-language-local-name="malagassi" 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%93%E0%B4%95%E0%B5%8D%E0%B4%B8%E0%B4%BF%E0%B4%9C%E0%B5%BB" title="ഓക്സിജൻ — malajalam" lang="ml" hreflang="ml" data-title="ഓക്സിജൻ" data-language-autonym="മലയാളം" data-language-local-name="malajalam" class="interlanguage-link-target"><span>മലയാളം</span></a></li><li class="interlanguage-link interwiki-mt mw-list-item"><a href="https://mt.wikipedia.org/wiki/Ossi%C4%A1enu" title="Ossiġenu — malta" lang="mt" hreflang="mt" data-title="Ossiġenu" data-language-autonym="Malti" data-language-local-name="malta" class="interlanguage-link-target"><span>Malti</span></a></li><li class="interlanguage-link interwiki-mi mw-list-item"><a href="https://mi.wikipedia.org/wiki/H%C4%81ora" title="Hāora — maori" lang="mi" hreflang="mi" data-title="Hāora" data-language-autonym="Māori" data-language-local-name="maori" class="interlanguage-link-target"><span>Māori</span></a></li><li class="interlanguage-link interwiki-mr mw-list-item"><a href="https://mr.wikipedia.org/wiki/%E0%A4%91%E0%A4%95%E0%A5%8D%E0%A4%B8%E0%A4%BF%E0%A4%9C%E0%A4%A8" title="ऑक्सिजन — marathi" lang="mr" hreflang="mr" data-title="ऑक्सिजन" data-language-autonym="मराठी" data-language-local-name="marathi" class="interlanguage-link-target"><span>मराठी</span></a></li><li class="interlanguage-link interwiki-xmf mw-list-item"><a href="https://xmf.wikipedia.org/wiki/%E1%83%9F%E1%83%90%E1%83%9C%E1%83%92%E1%83%91%E1%83%90%E1%83%93%E1%83%98" title="ჟანგბადი — mingreli" lang="xmf" hreflang="xmf" data-title="ჟანგბადი" data-language-autonym="მარგალური" data-language-local-name="mingreli" class="interlanguage-link-target"><span>მარგალური</span></a></li><li class="interlanguage-link interwiki-arz mw-list-item"><a href="https://arz.wikipedia.org/wiki/%D8%A7%D9%88%D9%83%D8%B3%D9%8A%D8%AC%D9%8A%D9%86" title="اوكسيجين — egyptinarabia" lang="arz" hreflang="arz" data-title="اوكسيجين" data-language-autonym="مصرى" data-language-local-name="egyptinarabia" class="interlanguage-link-target"><span>مصرى</span></a></li><li class="interlanguage-link interwiki-mzn mw-list-item"><a href="https://mzn.wikipedia.org/wiki/%D8%A7%D9%88%DA%A9%D8%B3%DB%8C%D8%AC%D9%86" title="اوکسیجن — mazandarani" lang="mzn" hreflang="mzn" data-title="اوکسیجن" data-language-autonym="مازِرونی" data-language-local-name="mazandarani" class="interlanguage-link-target"><span>مازِرونی</span></a></li><li class="interlanguage-link interwiki-mni mw-list-item"><a href="https://mni.wikipedia.org/wiki/%EA%AF%91%EA%AF%A3%EA%AF%9B%EA%AF%81%EA%AF%A4%EA%AF%96%EA%AF%A6%EA%AF%9F" title="ꯑꯣꯛꯁꯤꯖꯦꯟ — manipuri" lang="mni" hreflang="mni" data-title="ꯑꯣꯛꯁꯤꯖꯦꯟ" data-language-autonym="ꯃꯤꯇꯩ ꯂꯣꯟ" data-language-local-name="manipuri" class="interlanguage-link-target"><span>ꯃꯤꯇꯩ ꯂꯣꯟ</span></a></li><li class="interlanguage-link interwiki-min mw-list-item"><a href="https://min.wikipedia.org/wiki/Oksigen" title="Oksigen — minangkabau" lang="min" hreflang="min" data-title="Oksigen" data-language-autonym="Minangkabau" data-language-local-name="minangkabau" class="interlanguage-link-target"><span>Minangkabau</span></a></li><li class="interlanguage-link interwiki-cdo mw-list-item"><a href="https://cdo.wikipedia.org/wiki/I%C5%8Dng" title="Iōng — Mindong" lang="cdo" hreflang="cdo" data-title="Iōng" data-language-autonym="閩東語 / Mìng-dĕ̤ng-ngṳ̄" data-language-local-name="Mindong" class="interlanguage-link-target"><span>閩東語 / Mìng-dĕ̤ng-ngṳ̄</span></a></li><li class="interlanguage-link interwiki-mdf mw-list-item"><a href="https://mdf.wikipedia.org/wiki/%D0%A8%D0%B0%D0%BF%D0%B0%D1%84%D0%BD%D0%B8" title="Шапафни — mokša" lang="mdf" hreflang="mdf" data-title="Шапафни" data-language-autonym="Мокшень" data-language-local-name="mokša" class="interlanguage-link-target"><span>Мокшень</span></a></li><li class="interlanguage-link interwiki-mn mw-list-item"><a href="https://mn.wikipedia.org/wiki/%D0%A5%D2%AF%D1%87%D0%B8%D0%BB%D1%82%D3%A9%D1%80%D3%A9%D0%B3%D1%87" title="Хүчилтөрөгч — mongoli" lang="mn" hreflang="mn" data-title="Хүчилтөрөгч" data-language-autonym="Монгол" data-language-local-name="mongoli" 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%B1%E1%80%AC%E1%80%80%E1%80%BA%E1%80%86%E1%80%AE%E1%80%82%E1%80%BB%E1%80%84%E1%80%BA" title="အောက်ဆီဂျင် — burma" lang="my" hreflang="my" data-title="အောက်ဆီဂျင်" data-language-autonym="မြန်မာဘာသာ" data-language-local-name="burma" class="interlanguage-link-target"><span>မြန်မာဘာသာ</span></a></li><li class="interlanguage-link interwiki-nah mw-list-item"><a href="https://nah.wikipedia.org/wiki/Ehecayoh" title="Ehecayoh — Nahuatl" lang="nah" hreflang="nah" data-title="Ehecayoh" data-language-autonym="Nāhuatl" data-language-local-name="Nahuatl" class="interlanguage-link-target"><span>Nāhuatl</span></a></li><li class="interlanguage-link interwiki-fj mw-list-item"><a href="https://fj.wikipedia.org/wiki/Okosijeni" title="Okosijeni — fidži" lang="fj" hreflang="fj" data-title="Okosijeni" data-language-autonym="Na Vosa Vakaviti" data-language-local-name="fidži" class="interlanguage-link-target"><span>Na Vosa Vakaviti</span></a></li><li class="interlanguage-link interwiki-nl mw-list-item"><a href="https://nl.wikipedia.org/wiki/Zuurstof_(element)" title="Zuurstof (element) — hollanti" lang="nl" hreflang="nl" data-title="Zuurstof (element)" data-language-autonym="Nederlands" data-language-local-name="hollanti" 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%AA%E0%A5%8D%E0%A4%B0%E0%A4%BE%E0%A4%A3%E0%A4%B5%E0%A4%BE%E0%A4%AF%E0%A5%81" title="प्राणवायु — nepali" lang="ne" hreflang="ne" data-title="प्राणवायु" 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%85%E0%A4%95%E0%A5%8D%E0%A4%B8%E0%A4%BF%E0%A4%9C%E0%A4%A8" title="अक्सिजन — newari" lang="new" hreflang="new" data-title="अक्सिजन" 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 badge-Q17437798 badge-goodarticle mw-list-item" title="hyvä artikkeli"><a href="https://ja.wikipedia.org/wiki/%E9%85%B8%E7%B4%A0" title="酸素 — japani" lang="ja" hreflang="ja" data-title="酸素" data-language-autonym="日本語" data-language-local-name="japani" class="interlanguage-link-target"><span>日本語</span></a></li><li class="interlanguage-link interwiki-ce mw-list-item"><a href="https://ce.wikipedia.org/wiki/%D0%9C%D1%83%D1%81%D1%82%D0%BB%D1%83%D1%80%D0%B3" title="Мустлург — tšetšeeni" lang="ce" hreflang="ce" data-title="Мустлург" data-language-autonym="Нохчийн" data-language-local-name="tšetšeeni" class="interlanguage-link-target"><span>Нохчийн</span></a></li><li class="interlanguage-link interwiki-frr mw-list-item"><a href="https://frr.wikipedia.org/wiki/S%C3%BCrstoof" title="Sürstoof — pohjoisfriisi" lang="frr" hreflang="frr" data-title="Sürstoof" data-language-autonym="Nordfriisk" data-language-local-name="pohjoisfriisi" 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/Oksygen" title="Oksygen — norjan bokmål" lang="nb" hreflang="nb" data-title="Oksygen" data-language-autonym="Norsk bokmål" data-language-local-name="norjan 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/Oksygen" title="Oksygen — norjan nynorsk" lang="nn" hreflang="nn" data-title="Oksygen" data-language-autonym="Norsk nynorsk" data-language-local-name="norjan 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/Oxigene" title="Oxigene — novial" lang="nov" hreflang="nov" data-title="Oxigene" 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/Oxig%C3%A8n" title="Oxigèn — oksitaani" lang="oc" hreflang="oc" data-title="Oxigèn" data-language-autonym="Occitan" data-language-local-name="oksitaani" class="interlanguage-link-target"><span>Occitan</span></a></li><li class="interlanguage-link interwiki-mhr mw-list-item"><a href="https://mhr.wikipedia.org/wiki/%D0%A8%D0%BE%D0%BF%D0%B5%D1%88%D1%82%D1%8B%D1%88" title="Шопештыш — Eastern Mari" lang="mhr" hreflang="mhr" data-title="Шопештыш" data-language-autonym="Олык марий" data-language-local-name="Eastern Mari" class="interlanguage-link-target"><span>Олык марий</span></a></li><li class="interlanguage-link interwiki-or mw-list-item"><a href="https://or.wikipedia.org/wiki/%E0%AC%85%E0%AC%AE%E0%AD%8D%E0%AC%B3%E0%AC%9C%E0%AC%BE%E0%AC%A8" title="ଅମ୍ଳଜାନ — orija" lang="or" hreflang="or" data-title="ଅମ୍ଳଜାନ" data-language-autonym="ଓଡ଼ିଆ" data-language-local-name="orija" class="interlanguage-link-target"><span>ଓଡ଼ିଆ</span></a></li><li class="interlanguage-link interwiki-om mw-list-item"><a href="https://om.wikipedia.org/wiki/Ooksijiinii" title="Ooksijiinii — oromo" lang="om" hreflang="om" data-title="Ooksijiinii" data-language-autonym="Oromoo" data-language-local-name="oromo" class="interlanguage-link-target"><span>Oromoo</span></a></li><li class="interlanguage-link interwiki-uz mw-list-item"><a href="https://uz.wikipedia.org/wiki/Kislorod" title="Kislorod — uzbekki" lang="uz" hreflang="uz" data-title="Kislorod" data-language-autonym="Oʻzbekcha / ўзбекча" data-language-local-name="uzbekki" 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%95%E0%A8%B8%E0%A9%80%E0%A8%9C%E0%A8%A8" title="ਆਕਸੀਜਨ — pandžabi" lang="pa" hreflang="pa" data-title="ਆਕਸੀਜਨ" data-language-autonym="ਪੰਜਾਬੀ" data-language-local-name="pandžabi" class="interlanguage-link-target"><span>ਪੰਜਾਬੀ</span></a></li><li class="interlanguage-link interwiki-pi mw-list-item"><a href="https://pi.wikipedia.org/wiki/%E0%A4%85%E0%A4%95%E0%A5%8D%E0%A4%B8%E0%A4%BF%E0%A4%9C%E0%A4%A8" title="अक्सिजन — paali" lang="pi" hreflang="pi" data-title="अक्सिजन" data-language-autonym="पालि" data-language-local-name="paali" class="interlanguage-link-target"><span>पालि</span></a></li><li class="interlanguage-link interwiki-pnb mw-list-item"><a href="https://pnb.wikipedia.org/wiki/%D8%A2%DA%A9%D8%B3%DB%8C%D8%AC%D9%86" title="آکسیجن — Western Punjabi" lang="pnb" hreflang="pnb" data-title="آکسیجن" data-language-autonym="پنجابی" data-language-local-name="Western Punjabi" class="interlanguage-link-target"><span>پنجابی</span></a></li><li class="interlanguage-link interwiki-blk mw-list-item"><a href="https://blk.wikipedia.org/wiki/%E1%80%A1%E1%80%B1%E1%80%AC%E1%80%80%E1%80%BA%E1%80%9E%E1%80%AE%E1%80%85%E1%80%B2%E1%80%94%E1%80%BA" title="အောက်သီစဲန် — Pa'O" lang="blk" hreflang="blk" data-title="အောက်သီစဲန်" data-language-autonym="ပအိုဝ်ႏဘာႏသာႏ" data-language-local-name="Pa'O" class="interlanguage-link-target"><span>ပအိုဝ်ႏဘာႏသာႏ</span></a></li><li class="interlanguage-link interwiki-pap mw-list-item"><a href="https://pap.wikipedia.org/wiki/Z%C3%BCrst%C3%B2f" title="Zürstòf — papiamentu" lang="pap" hreflang="pap" data-title="Zürstòf" data-language-autonym="Papiamentu" data-language-local-name="papiamentu" class="interlanguage-link-target"><span>Papiamentu</span></a></li><li class="interlanguage-link interwiki-ps mw-list-item"><a href="https://ps.wikipedia.org/wiki/%D8%A7%DA%A9%D8%B3%D9%8A%D8%AC%D9%86" title="اکسيجن — paštu" lang="ps" hreflang="ps" data-title="اکسيجن" data-language-autonym="پښتو" data-language-local-name="paštu" class="interlanguage-link-target"><span>پښتو</span></a></li><li class="interlanguage-link interwiki-jam mw-list-item"><a href="https://jam.wikipedia.org/wiki/Axijen" title="Axijen — jamaikankreolienglanti" lang="jam" hreflang="jam" data-title="Axijen" data-language-autonym="Patois" data-language-local-name="jamaikankreolienglanti" class="interlanguage-link-target"><span>Patois</span></a></li><li class="interlanguage-link interwiki-koi mw-list-item"><a href="https://koi.wikipedia.org/wiki/%D0%A8%D3%A7%D0%BC%D1%83%D0%B2%D1%82%D1%8B%D1%80" title="Шӧмувтыр — komipermjakki" lang="koi" hreflang="koi" data-title="Шӧмувтыр" data-language-autonym="Перем коми" data-language-local-name="komipermjakki" class="interlanguage-link-target"><span>Перем коми</span></a></li><li class="interlanguage-link interwiki-pms mw-list-item"><a href="https://pms.wikipedia.org/wiki/Oss%C3%ACgen" title="Ossìgen — piemonte" lang="pms" hreflang="pms" data-title="Ossìgen" data-language-autonym="Piemontèis" data-language-local-name="piemonte" class="interlanguage-link-target"><span>Piemontèis</span></a></li><li class="interlanguage-link interwiki-nds mw-list-item"><a href="https://nds.wikipedia.org/wiki/Suerstoff" title="Suerstoff — alasaksa" lang="nds" hreflang="nds" data-title="Suerstoff" data-language-autonym="Plattdüütsch" data-language-local-name="alasaksa" 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/Tlen" title="Tlen — puola" lang="pl" hreflang="pl" data-title="Tlen" data-language-autonym="Polski" data-language-local-name="puola" class="interlanguage-link-target"><span>Polski</span></a></li><li class="interlanguage-link interwiki-pt badge-Q17437796 badge-featuredarticle mw-list-item" title="suositeltu artikkeli"><a href="https://pt.wikipedia.org/wiki/Oxig%C3%A9nio" title="Oxigénio — portugali" lang="pt" hreflang="pt" data-title="Oxigénio" data-language-autonym="Português" data-language-local-name="portugali" class="interlanguage-link-target"><span>Português</span></a></li><li class="interlanguage-link interwiki-ksh mw-list-item"><a href="https://ksh.wikipedia.org/wiki/Sauerstoff" title="Sauerstoff — kölsch" lang="ksh" hreflang="ksh" data-title="Sauerstoff" data-language-autonym="Ripoarisch" data-language-local-name="kölsch" class="interlanguage-link-target"><span>Ripoarisch</span></a></li><li class="interlanguage-link interwiki-ro badge-Q17437798 badge-goodarticle mw-list-item" title="hyvä artikkeli"><a href="https://ro.wikipedia.org/wiki/Oxigen" title="Oxigen — romania" lang="ro" hreflang="ro" data-title="Oxigen" data-language-autonym="Română" data-language-local-name="romania" class="interlanguage-link-target"><span>Română</span></a></li><li class="interlanguage-link interwiki-rm mw-list-item"><a href="https://rm.wikipedia.org/wiki/Oxigen" title="Oxigen — retoromaani" lang="rm" hreflang="rm" data-title="Oxigen" data-language-autonym="Rumantsch" data-language-local-name="retoromaani" class="interlanguage-link-target"><span>Rumantsch</span></a></li><li class="interlanguage-link interwiki-qu mw-list-item"><a href="https://qu.wikipedia.org/wiki/Muksichaq" title="Muksichaq — ketšua" lang="qu" hreflang="qu" data-title="Muksichaq" data-language-autonym="Runa Simi" data-language-local-name="ketšua" class="interlanguage-link-target"><span>Runa Simi</span></a></li><li class="interlanguage-link interwiki-rue mw-list-item"><a href="https://rue.wikipedia.org/wiki/%D0%9E%D0%BA%D1%81%D0%B8%D0%B3%D0%B5%D0%BD" title="Оксиген — ruteeni" lang="rue" hreflang="rue" data-title="Оксиген" data-language-autonym="Русиньскый" data-language-local-name="ruteeni" 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%9A%D0%B8%D1%81%D0%BB%D0%BE%D1%80%D0%BE%D0%B4" title="Кислород — venäjä" lang="ru" hreflang="ru" data-title="Кислород" data-language-autonym="Русский" data-language-local-name="venäjä" class="interlanguage-link-target"><span>Русский</span></a></li><li class="interlanguage-link interwiki-sah mw-list-item"><a href="https://sah.wikipedia.org/wiki/%D0%90%D0%B1%D0%B0%D0%BB%D1%8B%D0%BA" title="Абалык — jakuutti" lang="sah" hreflang="sah" data-title="Абалык" data-language-autonym="Саха тыла" data-language-local-name="jakuutti" class="interlanguage-link-target"><span>Саха тыла</span></a></li><li class="interlanguage-link interwiki-sat mw-list-item"><a href="https://sat.wikipedia.org/wiki/%E1%B1%B3%E1%B1%A0%E1%B1%A5%E1%B1%A4%E1%B1%A1%E1%B1%9F%E1%B1%B9%E1%B1%B1" title="ᱳᱠᱥᱤᱡᱟᱹᱱ — santali" lang="sat" hreflang="sat" data-title="ᱳᱠᱥᱤᱡᱟᱹᱱ" data-language-autonym="ᱥᱟᱱᱛᱟᱲᱤ" data-language-local-name="santali" class="interlanguage-link-target"><span>ᱥᱟᱱᱛᱟᱲᱤ</span></a></li><li class="interlanguage-link interwiki-skr mw-list-item"><a href="https://skr.wikipedia.org/wiki/%D8%A2%DA%A9%D8%B3%DB%8C%D8%AC%D9%86" title="آکسیجن — saraiki" lang="skr" hreflang="skr" data-title="آکسیجن" data-language-autonym="سرائیکی" data-language-local-name="saraiki" class="interlanguage-link-target"><span>سرائیکی</span></a></li><li class="interlanguage-link interwiki-sc mw-list-item"><a href="https://sc.wikipedia.org/wiki/Oss%C3%ACgenu" title="Ossìgenu — sardi" lang="sc" hreflang="sc" data-title="Ossìgenu" data-language-autonym="Sardu" data-language-local-name="sardi" class="interlanguage-link-target"><span>Sardu</span></a></li><li class="interlanguage-link interwiki-sco mw-list-item"><a href="https://sco.wikipedia.org/wiki/Oxygen" title="Oxygen — skotti" lang="sco" hreflang="sco" data-title="Oxygen" data-language-autonym="Scots" data-language-local-name="skotti" 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/Suurstof" title="Suurstof — saterlandinfriisi" lang="stq" hreflang="stq" data-title="Suurstof" data-language-autonym="Seeltersk" data-language-local-name="saterlandinfriisi" 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/Oksigjeni" title="Oksigjeni — albania" lang="sq" hreflang="sq" data-title="Oksigjeni" data-language-autonym="Shqip" data-language-local-name="albania" class="interlanguage-link-target"><span>Shqip</span></a></li><li class="interlanguage-link interwiki-scn mw-list-item"><a href="https://scn.wikipedia.org/wiki/Uss%C3%ACgginu" title="Ussìgginu — sisilia" lang="scn" hreflang="scn" data-title="Ussìgginu" data-language-autonym="Sicilianu" data-language-local-name="sisilia" class="interlanguage-link-target"><span>Sicilianu</span></a></li><li class="interlanguage-link interwiki-si mw-list-item"><a href="https://si.wikipedia.org/wiki/%E0%B6%94%E0%B6%9A%E0%B7%8A%E0%B7%83%E0%B7%92%E0%B6%A2%E0%B6%B1%E0%B7%8A" title="ඔක්සිජන් — sinhala" lang="si" hreflang="si" data-title="ඔක්සිජන්" data-language-autonym="සිංහල" data-language-local-name="sinhala" 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/Oxygen" title="Oxygen — Simple English" lang="en-simple" hreflang="en-simple" data-title="Oxygen" 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-sd mw-list-item"><a href="https://sd.wikipedia.org/wiki/%D8%A2%DA%AA%D8%B3%D9%8A%D8%AC%D9%86" title="آڪسيجن — sindhi" lang="sd" hreflang="sd" data-title="آڪسيجن" 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/Kysl%C3%ADk" title="Kyslík — slovakki" lang="sk" hreflang="sk" data-title="Kyslík" data-language-autonym="Slovenčina" data-language-local-name="slovakki" class="interlanguage-link-target"><span>Slovenčina</span></a></li><li class="interlanguage-link interwiki-sl badge-Q17437796 badge-featuredarticle mw-list-item" title="suositeltu artikkeli"><a href="https://sl.wikipedia.org/wiki/Kisik" title="Kisik — sloveeni" lang="sl" hreflang="sl" data-title="Kisik" data-language-autonym="Slovenščina" data-language-local-name="sloveeni" class="interlanguage-link-target"><span>Slovenščina</span></a></li><li class="interlanguage-link interwiki-cu mw-list-item"><a href="https://cu.wikipedia.org/wiki/%D0%9A%EA%99%91%D1%81%D1%8C%D0%BB%D0%BE%D1%80%D0%BE%D0%B4%D1%8A" title="Кꙑсьлородъ — kirkkoslaavi" lang="cu" hreflang="cu" data-title="Кꙑсьлородъ" data-language-autonym="Словѣньскъ / ⰔⰎⰑⰂⰡⰐⰠⰔⰍⰟ" data-language-local-name="kirkkoslaavi" class="interlanguage-link-target"><span>Словѣньскъ / ⰔⰎⰑⰂⰡⰐⰠⰔⰍⰟ</span></a></li><li class="interlanguage-link interwiki-so mw-list-item"><a href="https://so.wikipedia.org/wiki/Ogsajiin" title="Ogsajiin — somali" lang="so" hreflang="so" data-title="Ogsajiin" data-language-autonym="Soomaaliga" data-language-local-name="somali" class="interlanguage-link-target"><span>Soomaaliga</span></a></li><li class="interlanguage-link interwiki-ckb mw-list-item"><a href="https://ckb.wikipedia.org/wiki/%D8%A6%DB%86%DA%A9%D8%B3%D8%AC%DB%8C%D9%86" title="ئۆکسجین — soranî" lang="ckb" hreflang="ckb" data-title="ئۆکسجین" data-language-autonym="کوردی" data-language-local-name="soranî" class="interlanguage-link-target"><span>کوردی</span></a></li><li class="interlanguage-link interwiki-sr mw-list-item"><a href="https://sr.wikipedia.org/wiki/%D0%9A%D0%B8%D1%81%D0%B5%D0%BE%D0%BD%D0%B8%D0%BA" title="Кисеоник — serbia" lang="sr" hreflang="sr" data-title="Кисеоник" data-language-autonym="Српски / srpski" data-language-local-name="serbia" 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/Kiseonik" title="Kiseonik — serbokroaatti" lang="sh" hreflang="sh" data-title="Kiseonik" data-language-autonym="Srpskohrvatski / српскохрватски" data-language-local-name="serbokroaatti" 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/Oksig%C3%A9n" title="Oksigén — sunda" lang="su" hreflang="su" data-title="Oksigén" data-language-autonym="Sunda" data-language-local-name="sunda" class="interlanguage-link-target"><span>Sunda</span></a></li><li class="interlanguage-link interwiki-sv badge-Q17559452 badge-recommendedarticle mw-list-item" title="lupaava artikkeli"><a href="https://sv.wikipedia.org/wiki/Syre" title="Syre — ruotsi" lang="sv" hreflang="sv" data-title="Syre" data-language-autonym="Svenska" data-language-local-name="ruotsi" 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/Oksihino" title="Oksihino — tagalog" lang="tl" hreflang="tl" data-title="Oksihino" 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%92%E0%AE%9F%E0%AF%8D%E0%AE%9A%E0%AE%BF%E0%AE%9A%E0%AE%A9%E0%AF%8D" title="ஒட்சிசன் — tamili" lang="ta" hreflang="ta" data-title="ஒட்சிசன்" data-language-autonym="தமிழ்" data-language-local-name="tamili" 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/Uksijin" title="Uksijin — kabyyli" lang="kab" hreflang="kab" data-title="Uksijin" data-language-autonym="Taqbaylit" data-language-local-name="kabyyli" class="interlanguage-link-target"><span>Taqbaylit</span></a></li><li class="interlanguage-link interwiki-tt mw-list-item"><a href="https://tt.wikipedia.org/wiki/%D0%9A%D0%B8%D1%81%D0%BB%D0%BE%D1%80%D0%BE%D0%B4" title="Кислород — tataari" lang="tt" hreflang="tt" data-title="Кислород" data-language-autonym="Татарча / tatarça" data-language-local-name="tataari" class="interlanguage-link-target"><span>Татарча / tatarça</span></a></li><li class="interlanguage-link interwiki-te mw-list-item"><a href="https://te.wikipedia.org/wiki/%E0%B0%86%E0%B0%95%E0%B1%8D%E0%B0%B8%E0%B0%BF%E0%B0%9C%E0%B0%A8%E0%B1%8D" title="ఆక్సిజన్ — telugu" lang="te" hreflang="te" data-title="ఆక్సిజన్" 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%B8%AD%E0%B8%AD%E0%B8%81%E0%B8%8B%E0%B8%B4%E0%B9%80%E0%B8%88%E0%B8%99" title="ออกซิเจน — thai" lang="th" hreflang="th" data-title="ออกซิเจน" data-language-autonym="ไทย" data-language-local-name="thai" class="interlanguage-link-target"><span>ไทย</span></a></li><li class="interlanguage-link interwiki-vi mw-list-item"><a href="https://vi.wikipedia.org/wiki/Oxy" title="Oxy — vietnam" lang="vi" hreflang="vi" data-title="Oxy" data-language-autonym="Tiếng Việt" data-language-local-name="vietnam" class="interlanguage-link-target"><span>Tiếng Việt</span></a></li><li class="interlanguage-link interwiki-tg mw-list-item"><a href="https://tg.wikipedia.org/wiki/%D0%9E%D0%BA%D1%81%D0%B8%D0%B3%D0%B5%D0%BD" title="Оксиген — tadžikki" lang="tg" hreflang="tg" data-title="Оксиген" data-language-autonym="Тоҷикӣ" data-language-local-name="tadžikki" class="interlanguage-link-target"><span>Тоҷикӣ</span></a></li><li class="interlanguage-link interwiki-chr mw-list-item"><a href="https://chr.wikipedia.org/wiki/%E1%8E%A4%E1%8F%AC%E1%8E%B3%E1%8F%95%E1%8F%8D%E1%8F%97" title="ᎤᏬᎳᏕᏍᏗ — cherokee" lang="chr" hreflang="chr" data-title="ᎤᏬᎳᏕᏍᏗ" data-language-autonym="ᏣᎳᎩ" data-language-local-name="cherokee" class="interlanguage-link-target"><span>ᏣᎳᎩ</span></a></li><li class="interlanguage-link interwiki-tcy mw-list-item"><a href="https://tcy.wikipedia.org/wiki/%E0%B2%86%E0%B2%AE%E0%B3%8D%E0%B2%B2%E0%B2%9C%E0%B2%A8%E0%B2%95" title="ಆಮ್ಲಜನಕ — tulu" lang="tcy" hreflang="tcy" data-title="ಆಮ್ಲಜನಕ" data-language-autonym="ತುಳು" data-language-local-name="tulu" class="interlanguage-link-target"><span>ತುಳು</span></a></li><li class="interlanguage-link interwiki-tr mw-list-item"><a href="https://tr.wikipedia.org/wiki/Oksijen" title="Oksijen — turkki" lang="tr" hreflang="tr" data-title="Oksijen" data-language-autonym="Türkçe" data-language-local-name="turkki" 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%9A%D0%B8%D1%81%D0%B5%D0%BD%D1%8C" title="Кисень — ukraina" lang="uk" hreflang="uk" data-title="Кисень" data-language-autonym="Українська" data-language-local-name="ukraina" 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%A2%DA%A9%D8%B3%DB%8C%D8%AC%D9%86" title="آکسیجن — urdu" lang="ur" hreflang="ur" data-title="آکسیجن" data-language-autonym="اردو" data-language-local-name="urdu" class="interlanguage-link-target"><span>اردو</span></a></li><li class="interlanguage-link interwiki-ug mw-list-item"><a href="https://ug.wikipedia.org/wiki/%D8%A6%D9%88%D9%83%D8%B3%D9%89%DA%AF%DB%90%D9%86" title="ئوكسىگېن — uiguuri" lang="ug" hreflang="ug" data-title="ئوكسىگېن" data-language-autonym="ئۇيغۇرچە / Uyghurche" data-language-local-name="uiguuri" class="interlanguage-link-target"><span>ئۇيغۇرچە / Uyghurche</span></a></li><li class="interlanguage-link interwiki-za mw-list-item"><a href="https://za.wikipedia.org/wiki/Yangj" title="Yangj — zhuang" lang="za" hreflang="za" data-title="Yangj" 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/Os%C3%ACzeno" title="Osìzeno — venetsia" lang="vec" hreflang="vec" data-title="Osìzeno" data-language-autonym="Vèneto" data-language-local-name="venetsia" 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/Hapanik" title="Hapanik — vepsä" lang="vep" hreflang="vep" data-title="Hapanik" data-language-autonym="Vepsän kel’" data-language-local-name="vepsä" class="interlanguage-link-target"><span>Vepsän kel’</span></a></li><li class="interlanguage-link interwiki-vo mw-list-item"><a href="https://vo.wikipedia.org/wiki/Loxin" title="Loxin — volapük" lang="vo" hreflang="vo" data-title="Loxin" data-language-autonym="Volapük" data-language-local-name="volapük" class="interlanguage-link-target"><span>Volapük</span></a></li><li class="interlanguage-link interwiki-wa mw-list-item"><a href="https://wa.wikipedia.org/wiki/Ocsidjinne" title="Ocsidjinne — valloni" lang="wa" hreflang="wa" data-title="Ocsidjinne" data-language-autonym="Walon" data-language-local-name="valloni" class="interlanguage-link-target"><span>Walon</span></a></li><li class="interlanguage-link interwiki-zh-classical mw-list-item"><a href="https://zh-classical.wikipedia.org/wiki/%E6%B0%A7" title="氧 — klassinen kiina" lang="lzh" hreflang="lzh" data-title="氧" data-language-autonym="文言" data-language-local-name="klassinen kiina" class="interlanguage-link-target"><span>文言</span></a></li><li class="interlanguage-link interwiki-vls mw-list-item"><a href="https://vls.wikipedia.org/wiki/Zuurstof" title="Zuurstof — länsiflaami" lang="vls" hreflang="vls" data-title="Zuurstof" data-language-autonym="West-Vlams" data-language-local-name="länsiflaami" class="interlanguage-link-target"><span>West-Vlams</span></a></li><li class="interlanguage-link interwiki-war mw-list-item"><a href="https://war.wikipedia.org/wiki/Oksiheno" title="Oksiheno — waray" lang="war" hreflang="war" data-title="Oksiheno" 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/%E6%B0%A7" title="氧 — wu-kiina" lang="wuu" hreflang="wuu" data-title="氧" data-language-autonym="吴语" data-language-local-name="wu-kiina" class="interlanguage-link-target"><span>吴语</span></a></li><li class="interlanguage-link interwiki-yi mw-list-item"><a href="https://yi.wikipedia.org/wiki/%D7%96%D7%95%D7%99%D7%A2%D7%A8%D7%A9%D7%98%D7%90%D7%A3" title="זויערשטאף — jiddiš" lang="yi" hreflang="yi" data-title="זויערשטאף" data-language-autonym="ייִדיש" data-language-local-name="jiddiš" class="interlanguage-link-target"><span>ייִדיש</span></a></li><li class="interlanguage-link interwiki-yo mw-list-item"><a href="https://yo.wikipedia.org/wiki/%E1%BB%8C%CC%81ks%C3%ADj%C3%ACn" title="Ọ́ksíjìn — joruba" lang="yo" hreflang="yo" data-title="Ọ́ksíjìn" data-language-autonym="Yorùbá" data-language-local-name="joruba" class="interlanguage-link-target"><span>Yorùbá</span></a></li><li class="interlanguage-link interwiki-zh-yue mw-list-item"><a href="https://zh-yue.wikipedia.org/wiki/%E6%B0%A7" title="氧 — kantoninkiina" lang="yue" hreflang="yue" data-title="氧" data-language-autonym="粵語" data-language-local-name="kantoninkiina" class="interlanguage-link-target"><span>粵語</span></a></li><li class="interlanguage-link interwiki-diq mw-list-item"><a href="https://diq.wikipedia.org/wiki/Oksicen" title="Oksicen — Dimli" lang="diq" hreflang="diq" data-title="Oksicen" data-language-autonym="Zazaki" data-language-local-name="Dimli" class="interlanguage-link-target"><span>Zazaki</span></a></li><li class="interlanguage-link interwiki-bat-smg mw-list-item"><a href="https://bat-smg.wikipedia.org/wiki/Degounis" title="Degounis — samogiitti" lang="sgs" hreflang="sgs" data-title="Degounis" data-language-autonym="Žemaitėška" data-language-local-name="samogiitti" class="interlanguage-link-target"><span>Žemaitėška</span></a></li><li class="interlanguage-link interwiki-zh mw-list-item"><a href="https://zh.wikipedia.org/wiki/%E6%B0%A7" title="氧 — kiina" lang="zh" hreflang="zh" data-title="氧" data-language-autonym="中文" data-language-local-name="kiina" class="interlanguage-link-target"><span>中文</span></a></li><li class="interlanguage-link interwiki-kge mw-list-item"><a href="https://kge.wikipedia.org/wiki/Oksigen" title="Oksigen — Komering" lang="kge" hreflang="kge" data-title="Oksigen" data-language-autonym="Kumoring" data-language-local-name="Komering" class="interlanguage-link-target"><span>Kumoring</span></a></li><li class="interlanguage-link interwiki-zgh mw-list-item"><a href="https://zgh.wikipedia.org/wiki/%E2%B5%93%E2%B4%BD%E2%B5%99%E2%B5%89%E2%B5%8A%E2%B5%89%E2%B5%8F" title="ⵓⴽⵙⵉⵊⵉⵏ — vakioitu tamazight" lang="zgh" hreflang="zgh" data-title="ⵓⴽⵙⵉⵊⵉⵏ" data-language-autonym="ⵜⴰⵎⴰⵣⵉⵖⵜ ⵜⴰⵏⴰⵡⴰⵢⵜ" data-language-local-name="vakioitu tamazight" class="interlanguage-link-target"><span>ⵜⴰⵎⴰⵣⵉⵖⵜ ⵜⴰⵏⴰⵡⴰⵢⵜ</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/Q629#sitelinks-wikipedia" title="Muokkaa kieltenvälisiä linkkejä" class="wbc-editpage">Muokkaa linkkejä</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="Nimiavaruudet"> <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/Happi" title="Näytä sisältösivu [c]" accesskey="c"><span>Artikkeli</span></a></li><li id="ca-talk" class="vector-tab-noicon mw-list-item"><a href="/wiki/Keskustelu:Happi" rel="discussion" title="Keskustele sisällöstä [t]" accesskey="t"><span>Keskustelu</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="Valitse kieliversio" > <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">suomi</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="Näkymät"> <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/Happi"><span>Lue</span></a></li><li id="ca-ve-edit" class="vector-tab-noicon mw-list-item"><a href="/w/index.php?title=Happi&veaction=edit" title="Muokkaa tätä sivua [v]" accesskey="v"><span>Muokkaa</span></a></li><li id="ca-edit" class="collapsible vector-tab-noicon mw-list-item"><a href="/w/index.php?title=Happi&action=edit" title="Muokkaa tämän sivun lähdekoodia [e]" accesskey="e"><span>Muokkaa wikitekstiä</span></a></li><li id="ca-history" class="vector-tab-noicon mw-list-item"><a href="/w/index.php?title=Happi&action=history" title="Sivun aikaisemmat versiot [h]" accesskey="h"><span>Näytä historia</span></a></li> </ul> </div> </div> </nav> <nav class="vector-page-tools-landmark" aria-label="Sivutyökalut"> <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="Työkalut" > <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">Työkalut</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">Työkalut</div> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-pin-button" data-event-name="pinnable-header.vector-page-tools.pin">siirrä sivupalkkiin</button> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-unpin-button" data-event-name="pinnable-header.vector-page-tools.unpin">piilota</button> </div> <div id="p-cactions" class="vector-menu mw-portlet mw-portlet-cactions emptyPortlet vector-has-collapsible-items" title="Lisää valintoja" > <div class="vector-menu-heading"> Toiminnot </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/Happi"><span>Lue</span></a></li><li id="ca-more-ve-edit" class="vector-more-collapsible-item mw-list-item"><a href="/w/index.php?title=Happi&veaction=edit" title="Muokkaa tätä sivua [v]" accesskey="v"><span>Muokkaa</span></a></li><li id="ca-more-edit" class="collapsible vector-more-collapsible-item mw-list-item"><a href="/w/index.php?title=Happi&action=edit" title="Muokkaa tämän sivun lähdekoodia [e]" accesskey="e"><span>Muokkaa wikitekstiä</span></a></li><li id="ca-more-history" class="vector-more-collapsible-item mw-list-item"><a href="/w/index.php?title=Happi&action=history"><span>Näytä historia</span></a></li> </ul> </div> </div> <div id="p-tb" class="vector-menu mw-portlet mw-portlet-tb" > <div class="vector-menu-heading"> Yleinen </div> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="t-whatlinkshere" class="mw-list-item"><a href="/wiki/Toiminnot:T%C3%A4nne_viittaavat_sivut/Happi" title="Lista sivuista, jotka viittaavat tänne [j]" accesskey="j"><span>Tänne viittaavat sivut</span></a></li><li id="t-recentchangeslinked" class="mw-list-item"><a href="/wiki/Toiminnot:Linkitetyt_muutokset/Happi" rel="nofollow" title="Viimeisimmät muokkaukset sivuissa, joille viitataan tältä sivulta [k]" accesskey="k"><span>Linkitettyjen sivujen muutokset</span></a></li><li id="t-permalink" class="mw-list-item"><a href="/w/index.php?title=Happi&oldid=22875900" title="Ikilinkki tämän sivun tähän versioon"><span>Ikilinkki</span></a></li><li id="t-info" class="mw-list-item"><a href="/w/index.php?title=Happi&action=info" title="Enemmän tietoa tästä sivusta"><span>Sivun tiedot</span></a></li><li id="t-cite" class="mw-list-item"><a href="/w/index.php?title=Toiminnot:Viittaus&page=Happi&id=22875900&wpFormIdentifier=titleform" title="Tietoa tämän sivun lainaamisesta"><span>Viitetiedot</span></a></li><li id="t-urlshortener" class="mw-list-item"><a href="/w/index.php?title=Toiminnot:UrlShortener&url=https%3A%2F%2Ffi.wikipedia.org%2Fwiki%2FHappi"><span>Lyhennä URL-osoite</span></a></li><li id="t-urlshortener-qrcode" class="mw-list-item"><a href="/w/index.php?title=Toiminnot:QrCode&url=https%3A%2F%2Ffi.wikipedia.org%2Fwiki%2FHappi"><span>Lataa QR-koodi</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"> Tulosta/vie </div> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="coll-download-as-rl" class="mw-list-item"><a href="/w/index.php?title=Toiminnot:DownloadAsPdf&page=Happi&action=show-download-screen"><span>Lataa PDF-tiedostona</span></a></li><li id="t-print" class="mw-list-item"><a href="/w/index.php?title=Happi&printable=yes" title="Tulostettava versio [p]" accesskey="p"><span>Tulostettava versio</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"> Muissa hankkeissa </div> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li class="wb-otherproject-link wb-otherproject-commons mw-list-item"><a href="https://commons.wikimedia.org/wiki/Oxygen" hreflang="en"><span>Wikimedia Commons</span></a></li><li id="t-wikibase" class="wb-otherproject-link wb-otherproject-wikibase-dataitem mw-list-item"><a href="https://www.wikidata.org/wiki/Special:EntityPage/Q629" title="Linkki yhdistettyyn keskustietovaraston kohteeseen [g]" accesskey="g"><span>Wikidata-kohde</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="Sivutyökalut"> <div id="vector-page-tools-pinned-container" class="vector-pinned-container"> </div> </nav> <nav class="vector-appearance-landmark" aria-label="Ulkoasu"> <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">Ulkoasu</div> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-pin-button" data-event-name="pinnable-header.vector-appearance.pin">siirrä sivupalkkiin</button> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-unpin-button" data-event-name="pinnable-header.vector-appearance.unpin">piilota</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">Wikipediasta</div> </div> <div id="contentSub"><div id="mw-content-subtitle"></div></div> <div id="mw-content-text" class="mw-body-content"><div class="mw-content-ltr mw-parser-output" lang="fi" dir="ltr"><table class="infobox" align="left" border="1" cellpadding="2" cellspacing="0" style="float: right; margin-left: 5px; margin-bottom: 5px; border: 1px #aaaaaa solid; border-collapse: collapse; text-align:left; font-size: 90%; width: 300px; clear: all;"> <tbody><tr> <td colspan="2"> <table align="center" border="0"> <tbody><tr> <td colspan="2" align="center"><a href="/wiki/Typpi" title="Typpi">Typpi</a> ← <b>Happi</b> → <a href="/wiki/Fluori" title="Fluori">Fluori</a> </td></tr> <tr> <td rowspan="3" valign="middle">-<br />↑<br /><b>O</b><br />↓<br /><a href="/wiki/Rikki" title="Rikki">S</a>  <br /> <br />  </td></tr> <tr> <td align="center"><span typeof="mw:File"><a href="/wiki/Tiedosto:O-TableImage.svg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/f/fa/O-TableImage.svg/330px-O-TableImage.svg.png" decoding="async" width="300" height="90" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/f/fa/O-TableImage.svg/500px-O-TableImage.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/f/fa/O-TableImage.svg/600px-O-TableImage.svg.png 2x" data-file-width="671" data-file-height="202" /></a></span><br /> <div align="right"><small> <a href="/wiki/Jaksollinen_j%C3%A4rjestelm%C3%A4" title="Jaksollinen järjestelmä">Koko taulukko</a></small></div> </td></tr> </tbody></table> </td></tr> <tr bgcolor="#E7E7E7"> <td colspan="2" align="center"><b>Yleistä</b> </td></tr> <tr> <td>Nimi</td> <td>Happi </td></tr> <tr> <td><a href="/wiki/Kemiallinen_merkki" title="Kemiallinen merkki">Tunnus</a></td> <td>O </td></tr> <tr> <td><a href="/wiki/J%C3%A4rjestysluku_(kemia)" title="Järjestysluku (kemia)">Järjestysluku</a></td> <td>8 </td></tr> <tr> <td><a href="/wiki/Luokka_(jaksollinen_j%C3%A4rjestelm%C3%A4)" class="mw-redirect" title="Luokka (jaksollinen järjestelmä)">Luokka</a></td> <td><a href="/wiki/Ep%C3%A4metalli" title="Epämetalli">epämetalli</a> </td></tr> <tr> <td><a href="/wiki/Lohko_(jaksollinen_j%C3%A4rjestelm%C3%A4)" title="Lohko (jaksollinen järjestelmä)">Lohko</a></td> <td>p </td></tr> <tr> <td><a href="/wiki/Ryhm%C3%A4_(jaksollinen_j%C3%A4rjestelm%C3%A4)" title="Ryhmä (jaksollinen järjestelmä)">Ryhmä</a></td> <td>16, <a href="/wiki/Happiryhm%C3%A4" title="Happiryhmä">happiryhmä</a> </td></tr> <tr> <td><a href="/wiki/Jakso_(jaksollinen_j%C3%A4rjestelm%C3%A4)" title="Jakso (jaksollinen järjestelmä)">Jakso</a></td> <td>2 </td></tr> <tr><td><a href="/wiki/Tiheys" title="Tiheys">Tiheys</a></td><td>0,00143 · 10<sup>3</sup> kg/m<sup>3</sup></td></tr><tr><td><a href="/wiki/V%C3%A4ri" title="Väri">Väri</a></td><td>väritön, nestemäisenä sinertävää</td> </tr><tr> <td>Löytövuosi, löytäjä</td> <td>1774, <a href="/wiki/Joseph_Priestley" title="Joseph Priestley">Joseph Priestley</a>, <a href="/wiki/Carl_Wilhelm_Scheele" title="Carl Wilhelm Scheele">Carl Wilhelm Scheele</a><br /><small>(<a href="/wiki/Micha%C5%82_S%C4%99dziw%C3%B3j" title="Michał Sędziwój">Michał Sędziwój</a>)</small> </td></tr> <tr bgcolor="#E7E7E7"> <td colspan="2" align="center"><b>Atomiominaisuudet</b> </td></tr> <tr><td><a href="/wiki/Atomipaino" class="mw-redirect" title="Atomipaino">Atomipaino</a> (A<sub>r</sub>)</td><td>15,9994</td></tr> <tr><td><a href="/wiki/Atomis%C3%A4de" title="Atomisäde">Atomisäde</a>, mitattu (laskennallinen)</td><td>60 (48) <a href="/wiki/Pikometri" class="mw-redirect" title="Pikometri">pm</a></td></tr><tr><td><a href="/wiki/Kovalenttis%C3%A4de" class="mw-redirect" title="Kovalenttisäde">Kovalenttisäde</a></td><td>73 pm</td></tr><tr><td><a href="/wiki/Van_der_Waalsin_s%C3%A4de" title="Van der Waalsin säde">Van der Waalsin säde</a></td><td>152 pm</td></tr><tr><td><a href="/wiki/Atomiorbitaali" title="Atomiorbitaali">Orbitaalirakenne</a></td><td>[<a href="/wiki/Helium" title="Helium">He</a>] 2s<sup>2</sup> 2p<sup>4</sup></td></tr><tr><td><a href="/wiki/Elektroni" title="Elektroni">Elektroneja</a> <a href="/wiki/Elektronikuori" title="Elektronikuori">elektronikuorilla</a> </td><td>2, 6</td></tr><tr><td><a href="/wiki/Hapetusluku" title="Hapetusluku">Hapetusluvut</a></td><td><b>-II</b>, -I</td></tr><tr><td><a href="/wiki/Kiderakenne" title="Kiderakenne">Kiderakenne</a></td><td>kuutiollinen</td></tr> <tr bgcolor="#E7E7E7"> <td colspan="2" align="center"><b>Fysikaaliset ominaisuudet</b> </td></tr> <tr> <td><a href="/wiki/Olomuoto" title="Olomuoto">Olomuoto</a></td> <td>kaasu </td></tr> <tr><td><a href="/wiki/Sulamispiste" title="Sulamispiste">Sulamispiste</a></td><td>54,36 <a href="/wiki/Kelvin" title="Kelvin">K</a> (−218,79 <a href="/wiki/Celsiusaste" title="Celsiusaste">°C</a>)</td></tr><tr><td><a href="/wiki/Kiehumispiste" title="Kiehumispiste">Kiehumispiste</a></td><td>90,20 K (−182,962 °C)</td></tr><tr><td><a href="/wiki/Moolitilavuus" title="Moolitilavuus">Moolitilavuus</a></td><td>(25 °C) 17,36 · 10<sup>−3</sup> m<sup>3</sup>/mol</td></tr><tr><td><a href="/wiki/H%C3%B6yrystymisl%C3%A4mp%C3%B6" title="Höyrystymislämpö">Höyrystymislämpö</a></td><td>(O<sub>2</sub>) 6,82 kJ/mol</td></tr><tr><td><a href="/wiki/Sulamisl%C3%A4mp%C3%B6" title="Sulamislämpö">Sulamislämpö</a></td><td>(O<sub>2</sub>) 0,444 kJ/mol</td></tr><tr><td><a href="/wiki/H%C3%B6yrynpaine" title="Höyrynpaine">Höyrynpaine</a></td><td>1 000 <a href="/wiki/Pascal_(yksikk%C3%B6)" title="Pascal (yksikkö)">Pa</a> 61 K:ssa</td></tr><tr><td><a href="/wiki/%C3%84%C3%A4nen_nopeus" title="Äänen nopeus">Äänen nopeus</a></td><td>330 <a href="/wiki/Metri_sekunnissa" title="Metri sekunnissa">m/s</a> 295 K:ssa</td></tr> <tr bgcolor="#E7E7E7"> <td colspan="2" align="center"><b>Muuta</b> </td></tr> <tr><td><a href="/wiki/Elektronegatiivisuus" title="Elektronegatiivisuus">Elektronegatiivisuus</a></td><td>3,44 (<a href="/wiki/Paulingin_asteikko" class="mw-redirect" title="Paulingin asteikko">Paulingin asteikko</a>)</td></tr> <tr> <td><a href="/wiki/Ominaisl%C3%A4mp%C3%B6kapasiteetti" title="Ominaislämpökapasiteetti">Ominaislämpökapasiteetti</a></td> <td>0,918 (O<sub>2</sub>) kJ/(kg K) </td></tr><tr><td><a href="/wiki/L%C3%A4mm%C3%B6njohtavuus" title="Lämmönjohtavuus">Lämmönjohtavuus</a></td><td>(300 K) 0,02658 <a href="/wiki/Watti_kelvinmetri%C3%A4_kohti" class="mw-redirect" title="Watti kelvinmetriä kohti">W/(m·K)</a></td></tr> <tr><td><a href="/wiki/CAS-numero" title="CAS-numero">CAS-numero</a></td><td>7782-44-7 </td></tr> <tr bgcolor="#E7E7E7"> <td colspan="2" align="center"><small>Tiedot <a href="/wiki/NTP" title="NTP">normaalilämpötilassa ja -paineessa</a></small> </td></tr> </tbody></table> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/Tiedosto:Liquid_oxygen_in_a_beaker_4.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/c/c3/Liquid_oxygen_in_a_beaker_4.jpg/250px-Liquid_oxygen_in_a_beaker_4.jpg" decoding="async" width="250" height="305" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/c/c3/Liquid_oxygen_in_a_beaker_4.jpg/500px-Liquid_oxygen_in_a_beaker_4.jpg 1.5x" data-file-width="876" data-file-height="1068" /></a><figcaption>Nestemäistä happea</figcaption></figure> <p><b>Happi</b> on <a href="/wiki/Alkuaine" title="Alkuaine">alkuaine</a>, jonka <a href="/wiki/Kemiallinen_merkki" title="Kemiallinen merkki">kemiallinen merkki</a> on <b>O</b> (<a href="/wiki/Latina" title="Latina">lat.</a> <span lang="la"><i>oxygenium</i></span>), <a href="/wiki/J%C3%A4rjestysluku_(kemia)" title="Järjestysluku (kemia)">järjestysluku</a> 8 ja <a href="/wiki/Atomimassa" title="Atomimassa">atomimassa</a> <a href="/wiki/IUPAC" title="IUPAC">IUPACin</a> standardin mukaisesti [15,99903;15,99977] <a href="/wiki/Amu" class="mw-redirect" title="Amu">amu</a><sup id="cite_ref-1" class="reference"><a href="#cite_note-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup>. Esiintyessään vapaana alkuaineena se on tavallisissa lämpötiloissa <a href="/wiki/Kaasu" title="Kaasu">kaasuna</a>, ja sitä on Maan <a href="/wiki/Ilmakeh%C3%A4" title="Ilmakehä">ilmakehässä</a> noin 21 %. Luonnossa sitä on runsaasti myös erilaisissa <a href="/wiki/Yhdiste" title="Yhdiste">yhdisteissä</a>, muun muassa <a href="/wiki/Vesi" title="Vesi">vedessä</a>, joka on <a href="/wiki/Vety" title="Vety">vedyn</a> ja hapen yhdiste, sekä lukuisissa maa- ja kallioperän <a href="/wiki/Mineraali" title="Mineraali">mineraaleissa</a>, joista monet ovat erilaisia hapen ja muiden alkuaineiden muodostamia yhdisteitä. Happi on yleisin alkuaine maankuoressa, jossa sitä on noin 47 %.<sup id="cite_ref-HS_2-0" class="reference"><a href="#cite_note-HS-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup> </p><p>Vapaa happi reagoi herkästi monien muiden aineiden kanssa. Se ylläpitää <a href="/wiki/Palaminen" title="Palaminen">palamista</a>, ja se on myös useimpien <a href="/wiki/Eli%C3%B6" title="Eliö">eliöiden</a> elämälle välttämätöntä. Sitä vapautuu kasvien <a href="/wiki/Yhteytt%C3%A4minen" title="Yhteyttäminen">yhteyttämisessä</a> ja kuluu <a href="/wiki/Soluhengitys" title="Soluhengitys">soluhengityksessä</a>.<sup id="cite_ref-HS_2-1" class="reference"><a href="#cite_note-HS-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup> </p> <meta property="mw:PageProp/toc" /> <div class="mw-heading mw-heading2"><h2 id="Ominaisuudet">Ominaisuudet</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Happi&veaction=edit&section=1" title="Muokkaa osiota Ominaisuudet" class="mw-editsection-visualeditor"><span>muokkaa</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Happi&action=edit&section=1" title="Muokkaa osion lähdekoodia: Ominaisuudet"><span>muokkaa wikitekstiä</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Happimolekyyli (O<sub>2</sub>) muodostuu kahden happiatomin liitoksesta, ja esiintyy kaasumaisena huoneenlämpötilassa. Happi on tärkeä ainesosa <a href="/wiki/Ilmakeh%C3%A4" title="Ilmakehä">ilmakehässä</a>, jossa sitä on 21 %.<sup id="cite_ref-HS_2-2" class="reference"><a href="#cite_note-HS-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup> Nestehappi ja kiinteä happi ovat vaaleansinisiä, ja molemmat ovat hyvin <a href="/wiki/Paramagneettisuus" class="mw-redirect" title="Paramagneettisuus">paramagneettisia</a> aineita. Happimolekyylin elektronikonfiguraatio on epätavallinen: happi on perustilassaan tripletti, jolloin sen kahdella uloimmalla molekyyliorbitaalilla on yksi elektroni, joiden spinit ovat samansuuntaiset. Nämä orbitaalit eivät pysty muodostamaan sidoksia, jonka vuoksi happi on <b>diradikaali</b> ja siitä käytetään nimitystä <b>triplettihappi</b> (tripletti tarkoittaa multiplisiteettia eli kvanttiluvun arvojen lukumäärää, joka on 3). Perustilan happi (triplettihappi) voi reagoida virittyneessä triplettitilassa olevan molekyylin kanssa, jolloin muodostuu reaktiivinen singlettihappimolekyyli.<sup id="cite_ref-Nimetön-rDTN-1_3-0" class="reference"><a href="#cite_note-Nimetön-rDTN-1-3"><span class="cite-bracket">[</span>3<span class="cite-bracket">]</span></a></sup>     </p> <figure class="mw-halign-none" typeof="mw:File/Thumb"><a href="/wiki/Tiedosto:Triplettihappi.png" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/4/4e/Triplettihappi.png/350px-Triplettihappi.png" decoding="async" width="350" height="111" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/4/4e/Triplettihappi.png/525px-Triplettihappi.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/4/4e/Triplettihappi.png/700px-Triplettihappi.png 2x" data-file-width="937" data-file-height="298" /></a><figcaption>Tripletti- ja singlettihappi</figcaption></figure> <p><a href="/wiki/Otsoni" title="Otsoni">Otsoni</a> (O<sub>3</sub>) on hapen ns. <a href="/wiki/Allotropia" title="Allotropia">allotrooppinen</a> muoto, jossa yhdessä <a href="/wiki/Molekyyli" title="Molekyyli">molekyylissä</a> on kolme happi<a href="/wiki/Atomi" title="Atomi">atomia</a> kahden sijasta. Korkealla ilmakehässä <a href="/wiki/Otsonikerros" title="Otsonikerros">otsonikerros</a> on välttämätön elämän säilymiseksi maapallolla, mutta alempana ilmakehässä esiintyessään otsoni on erittäin paha <a href="/wiki/Ymp%C3%A4rist%C3%B6myrkky" title="Ympäristömyrkky">ympäristömyrkky</a> ja suurina pitoisuuksina tappava. </p><p>Vuonna 2001 löytyi neljäs allotrooppinen muoto O<sub>4</sub>, syvänpunainen yhdiste, joka syntyy paineistamalla O<sub>2</sub> 20 GPa:n paineeseen. Sitä tutkitaan rakettipolttoainekäyttöä varten, koska se on voimakkaampi <a href="/wiki/Hapettuminen" class="mw-redirect" title="Hapettuminen">hapetin</a> kuin O<sub>2</sub> tai O<sub>3</sub>. </p><p>Avaruudessa happea esiintyy Maan lähiavaruudessa suhteellisen runsaasti myös atomaarisena (O). Atomaarinen happi on aina 900 km korkeille <a href="/wiki/Satelliitti" title="Satelliitti">satelliittien</a> <a href="/wiki/Kiertorata" title="Kiertorata">kiertoradoille</a> asti ongelma, koska se reagoidessaan satelliitin pintamateriaalien kanssa muuttaa niiden säteily- ja absorbointi-ominaisuuksia, ja sitä kautta satelliitin lämpötilaa. </p><p>Happea voidaan valmistaa laboratoriossa <a href="/wiki/Vetyperoksidi" title="Vetyperoksidi">vetyperoksidista</a> (H<sub>2</sub>O<sub>2</sub>). Teollisuus valmistaa happea ilmakehästä alhaisessa lämpötilassa tislaamalla.<sup id="cite_ref-HS_2-3" class="reference"><a href="#cite_note-HS-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup> </p><p>Happi reagoi helposti monien aineiden kanssa. Korkeissa lämpötiloissa monet aineet reagoivat hapen kanssa kiivaasti ja runsaasti lämpöä vapauttaen; tällöin ne <a href="/wiki/Palaminen" title="Palaminen">palavat</a>. </p><p>Suuremmissa paineissa happi voi olla myrkyllistä. Tietyt johdokset ja yhdisteet kuten otsoni, vetyperoksidi, <a href="/wiki/Hydroksyyliradikaali" class="mw-redirect" title="Hydroksyyliradikaali">hydroksyyliradikaalit</a> ovat myös hyvin myrkyllisiä. Tiettyjä kemiallisesti reaktiivisia hapen muotoja tai happea sisältäviä yhdisteitä kutsutaan reaktiivisiksi happiyhdisteiksi (<a href="/wiki/Englannin_kieli" title="Englannin kieli">engl.</a> <span lang="en"><i>reactive oxygen species</i></span>, <i>ROS</i>). Reaktiivisista happiyhdisteistä tärkeimmät ovat superoksidiradikaali (O<sub>2</sub><sup>-</sup>), vetyperoksidi (H<sub>2</sub>O<sub>2</sub>), singlettihappi (<sup>1</sup>O<sub>2</sub>) ja hydroksyyliradikaali. Joillakin reaktiivisilla happiyhdisteillä on yksi tai useampi pariton elektroni, jolloin ne luokitellaan vapaiksi radikaaleiksi (·OH, O<sub>2</sub><sup>-</sup>). Toiset taas eivät ole vapaita radikaaleja (H<sub>2</sub>O<sub>2</sub>, <sup>1</sup>O<sub>2</sub>). Useimmat reaktiiviset happiyhdisteet ovat hapettavia, ja tyypillinen reaktiivisen happiyhdisteen aiheuttama vaurio on proteiinin tai lipidin hapettuminen. Hapettavuutensa perusteella reaktiivisista happiyhdisteistä haitallisimmat ovat hydroksyyliradikaali ja singlettihappi, joka reagoi erityisen helposti kaksoissidoksia sisältävien yhdisteiden kanssa.<sup id="cite_ref-Nimetön-rDTN-1_3-1" class="reference"><a href="#cite_note-Nimetön-rDTN-1-3"><span class="cite-bracket">[</span>3<span class="cite-bracket">]</span></a></sup> </p><p>Korkea happipitoisuus muodostaa tulipalo- ja räjähdysvaaran palavien aineiden kanssa. Esimerkiksi nestehappeen sekoitettuna hieno sahajauho muodostaa räjähdysaineen. </p> <div class="mw-heading mw-heading2"><h2 id="Käyttö"><span id="K.C3.A4ytt.C3.B6"></span>Käyttö</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Happi&veaction=edit&section=2" title="Muokkaa osiota Käyttö" class="mw-editsection-visualeditor"><span>muokkaa</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Happi&action=edit&section=2" title="Muokkaa osion lähdekoodia: Käyttö"><span>muokkaa wikitekstiä</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Teollisuudessa hapella on käyttöä voimakkaana hapettimena. Sitä käytetään varsinkin <a href="/wiki/Ter%C3%A4s" title="Teräs">teräs</a>- ja <a href="/wiki/Kemianteollisuus" title="Kemianteollisuus">kemianteollisuudessa</a>.<sup id="cite_ref-HS_2-4" class="reference"><a href="#cite_note-HS-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup> <a href="/wiki/Nestehappi" title="Nestehappi">Nestehappea</a> käytetään nestemäistä <a href="/wiki/Ajoaine" class="mw-redirect" title="Ajoaine">ajoainetta</a> käyttävissä <a href="/wiki/Rakettimoottori" title="Rakettimoottori">raketeissa</a> hapettimena. Hapella on myös lääketieteellistä käyttöä sairaaloissa, etenkin anestesiassa ja hengityselinsairaiden hengitykseen. Lisäksi happea käytetään hitsauksessa. </p><p>Happi on elämän kannalta tärkeä alkuaine. Happikaasu on monille eliöille elinehto. Happi muodostaa vedyn kanssa <a href="/wiki/Vesi" title="Vesi">vettä</a>, joka on välttämätöntä tuntemamme elämän muodostumiselle. Elämän syntyhistoriassa otsonikerroksen muodostuminen oli tärkeä vaihe, joka mahdollisti elämän levittäytymisen maalle, koska ilman otsonikerroksen suojaa eliöt altistuisivat liialliselle ultraviolettisäteilylle. </p> <div class="mw-heading mw-heading2"><h2 id="Historia_ja_nimeäminen"><span id="Historia_ja_nime.C3.A4minen"></span>Historia ja nimeäminen</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Happi&veaction=edit&section=3" title="Muokkaa osiota Historia ja nimeäminen" class="mw-editsection-visualeditor"><span>muokkaa</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Happi&action=edit&section=3" title="Muokkaa osion lähdekoodia: Historia ja nimeäminen"><span>muokkaa wikitekstiä</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Puhdasta happea erotti <a href="/wiki/Salpietari" class="mw-disambig" title="Salpietari">salpietarista</a> <a href="/wiki/Olaus_Borrichius" title="Olaus Borrichius">Olaus Borrichius</a> vuonna 1678, vuosisataa aiemmin saman menetelmän oli kuvannut Sendivogius, joka oli myös esittänyt, että tätä "elämää ruokkivaa" ainetta löytyy ilmasta. Jo 1600-luvulla tiedettiin, että <a href="/wiki/Salpietari" class="mw-disambig" title="Salpietari">salpietarista</a> irtoaa kuumennettaessa jotakin kaasua, mutta vanha käsitys, jonka mukaan <a href="/wiki/Ilma" title="Ilma">ilma</a> olisi alkuaine, vaikeutti pitkään tämän kaasun tunnistamista.<sup id="cite_ref-HS_2-5" class="reference"><a href="#cite_note-HS-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup> </p><p>Myöhemmin hapen löysi vuonna 1772 myös <a href="/wiki/Carl_Wilhelm_Scheele" title="Carl Wilhelm Scheele">Carl Wilhelm Scheele</a>, joka valmisti sitä kuumentamalla <a href="/wiki/Elohopeaoksidi" title="Elohopeaoksidi">elohopeaoksidia</a>, mutta tätä löytöä ei heti tunnustettu. Itsenäisesti sen löysi <a href="/wiki/Joseph_Priestley" title="Joseph Priestley">Joseph Priestley</a> vuonna 1774. Kansainvälisen nimen <i>oxygenium</i> antoi <a href="/wiki/Antoine_Lavoisier" title="Antoine Lavoisier">Antoine Lavoisier</a> vuonna 1774. Nimi merkitsee <i>happoja muodostavaa</i> ja johtuu siitä, että Lavoisier arveli sen olevan oleellisena osana kaikissa <a href="/wiki/Happo" title="Happo">hapoissa</a>.<sup id="cite_ref-HS_2-6" class="reference"><a href="#cite_note-HS-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup> Myöhemmin on kuitenkin osoittautunut, että esimerkiksi <a href="/wiki/Fluorivety" class="mw-redirect" title="Fluorivety">fluorivety</a> tai <a href="/wiki/Suolahappo" title="Suolahappo">suolahappo</a> eli vetykloridi ei sisällä happea. Lavoisier selvitti myös hapen merkityksen <a href="/wiki/Palaminen" title="Palaminen">palamisessa</a> ja osoitti täten aikaisemmin yleisesti hyväksytyn <a href="/wiki/Flogiston" class="mw-redirect" title="Flogiston">flogiston</a>teorian vääräksi.<sup id="cite_ref-HS_2-7" class="reference"><a href="#cite_note-HS-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup> </p><p>Suomenkielinen nimitys <i>happi</i> esiintyi ensi kerran <a href="/wiki/Julius_Krohn" title="Julius Krohn">Julius Krohnin</a> vuonna 1862 julkaisemassa teoksessa <i>Kemiallisia tiedesanoja</i>. Hieman aiemmin kehitettyä uudissanaa <i>happo</i> oli käytetty hapen tai oksidin merkityksessä jo 1840-luvulla. Molemmat on johdettu vanhasta suomen kielen sanasta <i>hapan</i>; vastaavasti ruotsin kielessä happea tarkoittava sana <i>syre</i> on johdos hapanta tarkoittavasta sanasta <i>sur</i>.<sup id="cite_ref-4" class="reference"><a href="#cite_note-4"><span class="cite-bracket">[</span>4<span class="cite-bracket">]</span></a></sup> </p> <div class="mw-heading mw-heading2"><h2 id="Katso_myös"><span id="Katso_my.C3.B6s"></span>Katso myös</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Happi&veaction=edit&section=4" title="Muokkaa osiota Katso myös" class="mw-editsection-visualeditor"><span>muokkaa</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Happi&action=edit&section=4" title="Muokkaa osion lähdekoodia: Katso myös"><span>muokkaa wikitekstiä</span></a><span class="mw-editsection-bracket">]</span></span></div> <ul><li><a href="/wiki/Hapen_kiertokulku" title="Hapen kiertokulku">Hapen kiertokulku</a></li> <li><a href="/wiki/Happipitoisuus_(limnologia)" title="Happipitoisuus (limnologia)">Happipitoisuus (limnologia)</a></li> <li><a href="/wiki/Happikato" title="Happikato">Happikato</a></li> <li><a href="/wiki/Hapen_isotoopit" title="Hapen isotoopit">Hapen isotoopit</a></li></ul> <div class="mw-heading mw-heading2"><h2 id="Lähteet"><span id="L.C3.A4hteet"></span>Lähteet</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Happi&veaction=edit&section=5" title="Muokkaa osiota Lähteet" class="mw-editsection-visualeditor"><span>muokkaa</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Happi&action=edit&section=5" title="Muokkaa osion lähdekoodia: Lähteet"><span>muokkaa wikitekstiä</span></a><span class="mw-editsection-bracket">]</span></span></div> <style data-mw-deduplicate="TemplateStyles:r23091323">.mw-parser-output div.viitteet-malline ol.references{list-style-type:inherit}.mw-parser-output .viitteet-sarakkeet li{page-break-inside:avoid;break-inside:avoid-column}.mw-parser-output ol.references>li:target{background-color:var(--background-color-interactive,#DEF)}.mw-parser-output sup.reference:target{background-color:var(--background-color-interactive,#DEF)}.mw-parser-output span[rel="mw:referencedBy"]{counter-reset:mw-ref-linkback 0}.mw-parser-output span[rel="mw:referencedBy"]>a::before{font-style:italic;content:counter(mw-ref-linkback,lower-alpha)}body.action-info .mw-parser-output :target{background-color:var(--background-color-interactive,#DEF)}</style><div class="viitteet-malline" style="list-style-type:decimal;"><ol class="references"> <li id="cite_note-1"><span class="mw-cite-backlink"><a href="#cite_ref-1">↑</a></span> <span class="reference-text"><span class="lehtiviite" title="Lehtiviite">Michael T. Wieser & Tyler B. Coplen: Atomic Weights of the Elements 2009 (IUPAC technical report). <i>Pure and Applied Chemistry</i>, 2011, 83. vsk, nro 2.  IUPAC. <a rel="nofollow" class="external text" href="http://www.iupac.org/publications/pac/pdf/2011/pdf/8302x0359.pdf">Artikkelin verkkoversio</a>. Viitattu 15.6.2011. <span style="font-size: 0.95em; position: relative;">(englanniksi)</span></span></span> </li> <li id="cite_note-HS-2"><span class="mw-cite-backlink">↑ <a href="#cite_ref-HS_2-0"><sup><i>a</i></sup></a> <a href="#cite_ref-HS_2-1"><sup><i>b</i></sup></a> <a href="#cite_ref-HS_2-2"><sup><i>c</i></sup></a> <a href="#cite_ref-HS_2-3"><sup><i>d</i></sup></a> <a href="#cite_ref-HS_2-4"><sup><i>e</i></sup></a> <a href="#cite_ref-HS_2-5"><sup><i>f</i></sup></a> <a href="#cite_ref-HS_2-6"><sup><i>g</i></sup></a> <a href="#cite_ref-HS_2-7"><sup><i>h</i></sup></a></span> <span class="reference-text"><span class="verkkoviite" title="Verkkoviite">Marko Hamilo: <a rel="nofollow" class="external text" href="http://www2.hs.fi/extrat/teemasivut/tiedeluonto/alkuaineet/08.html">Tuntemamme elämä vaatii happea</a> Helsingin Sanomat, alkuainesarjan artikkeli hapesta. <a rel="nofollow" class="external text" href="https://web.archive.org/web/20100210123359/http://www2.hs.fi/extrat/teemasivut/tiedeluonto/alkuaineet/08.html">Arkistoitu</a> 10.2.2010. Viitattu 7.7.2010.</span></span> </li> <li id="cite_note-Nimetön-rDTN-1-3"><span class="mw-cite-backlink">↑ <a href="#cite_ref-Nimetön-rDTN-1_3-0"><sup><i>a</i></sup></a> <a href="#cite_ref-Nimetön-rDTN-1_3-1"><sup><i>b</i></sup></a></span> <span class="reference-text"><span class="kirjaviite" title="Kirjaviite">Elina Vapaavuori, Eva-Mari Aro & Esa Tyystjärvi: <i>Fotosynteesi</i>, s. 192.  BoD – Books on Demand, 2017. </span></span> </li> <li id="cite_note-4"><span class="mw-cite-backlink"><a href="#cite_ref-4">↑</a></span> <span class="reference-text"><span class="kirjaviite" title="Kirjaviite">Kaisa Häkkinen: <i>Nykysuomen etymologinen sanakirja</i>, s. 170–171, 1561.  Helsinki:  WSOY, 2004.  <a href="/wiki/Toiminnot:Kirjal%C3%A4hteet/951-0-27108-X" title="Toiminnot:Kirjalähteet/951-0-27108-X">ISBN 951-0-27108-X</a> </span></span> </li> </ol> </div> <div class="mw-heading mw-heading2"><h2 id="Aiheesta_muualla">Aiheesta muualla</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Happi&veaction=edit&section=6" title="Muokkaa osiota Aiheesta muualla" class="mw-editsection-visualeditor"><span>muokkaa</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Happi&action=edit&section=6" title="Muokkaa osion lähdekoodia: Aiheesta muualla"><span>muokkaa wikitekstiä</span></a><span class="mw-editsection-bracket">]</span></span></div> <style data-mw-deduplicate="TemplateStyles:r22431496">.mw-parser-output .side-box{margin:4px 0;box-sizing:border-box;border:1px solid #aaa;font-size:88%;line-height:1.25em;background-color:#f9f9f9;display:flow-root}.mw-parser-output .side-box-abovebelow,.mw-parser-output .side-box-text{padding:0.25em 0.9em}.mw-parser-output .side-box-image{padding:2px 0 2px 0.9em;text-align:center}.mw-parser-output .side-box-imageright{padding:2px 0.9em 2px 0;text-align:center}@media(min-width:500px){.mw-parser-output .side-box-flex{display:flex;align-items:center}.mw-parser-output .side-box-text{flex:1;min-width:0}}@media(min-width:720px){.mw-parser-output .side-box{width:238px}.mw-parser-output .side-box-right{clear:right;float:right;margin-left:1em}.mw-parser-output .side-box-left{margin-right:1em}}</style><div class="side-box side-box-right plainlinks sistersitebox"><style data-mw-deduplicate="TemplateStyles:r22718453">.mw-parser-output .plainlist ol,.mw-parser-output .plainlist ul{line-height:inherit;list-style:none;margin:0;padding:0}.mw-parser-output .plainlist ol li,.mw-parser-output .plainlist ul li{margin-bottom:0}</style> <div class="side-box-flex"> <div class="side-box-image"><span class="noviewer" typeof="mw:File"><a href="/wiki/Tiedosto:Commons-logo.svg" class="mw-file-description"><img alt="" src="//upload.wikimedia.org/wikipedia/commons/thumb/4/4a/Commons-logo.svg/40px-Commons-logo.svg.png" decoding="async" width="30" height="40" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/4/4a/Commons-logo.svg/60px-Commons-logo.svg.png 1.5x" data-file-width="1024" data-file-height="1376" /></a></span></div> <div class="side-box-text plainlist"><a href="/wiki/Wikimedia_Commons" title="Wikimedia Commons">Wikimedia Commonsissa</a> on kuvia tai muita tiedostoja aiheesta <b><a href="https://commons.wikimedia.org/wiki/Category:Oxygen" class="extiw" title="commons:Category:Oxygen">Happi</a></b>.</div></div> </div> <ul><li><a rel="nofollow" class="external text" href="http://www.ilo.org/dyn/icsc/showcard.display?p_lang=fi&p_card_id=0138&p_version=2">Hapen kansainvälinen kemikaalikortti</a></li> <li><a rel="nofollow" class="external text" href="http://www.ilo.org/dyn/icsc/showcard.display?p_lang=fi&p_card_id=0880&p_version=2">Syväjäähdytetyn hapen kansainvälinen kemikaalikortti</a></li> <li><a rel="nofollow" class="external text" href="http://www.ttl.fi/ova/happi.html">Turvallisuusohje (OVA-ohje): Happi</a> (<a rel="nofollow" class="external text" href="https://web.archive.org/web/20111104105126/http://www.ttl.fi/ova/happi.html">Arkistoitu</a> – Internet Archive)</li> <li><a rel="nofollow" class="external text" href="http://www.hmdb.ca/metabolites/HMDB01377">Human Metabolome Database: Oxygen</a> <span style="font-size: 0.95em; position: relative;">(englanniksi)</span></li> <li><a rel="nofollow" class="external text" href="http://www.kegg.com/dbget-bin/www_bget?cpd:C00007+-kcf">KEGG: Oxygen</a> (<a rel="nofollow" class="external text" href="https://web.archive.org/web/20120612020629/http://www.kegg.com/dbget-bin/www_bget?cpd:C00007+-kcf">Arkistoitu</a> – Internet Archive) <span style="font-size: 0.95em; position: relative;">(englanniksi)</span></li> <li><a rel="nofollow" class="external text" href="http://www.periodictable.com/Elements/008/data.html">Periodictable: Technical data for Oxygen</a> <span style="font-size: 0.95em; position: relative;">(englanniksi)</span></li> <li>Kokeita nestemäisellä hapella: <a rel="nofollow" class="external free" href="http://koti.mbnet.fi/antitz/dime">http://koti.mbnet.fi/antitz/dime</a> (<a rel="nofollow" class="external text" href="https://web.archive.org/web/20070704142237/http://koti.mbnet.fi/antitz/dime">Arkistoitu</a> – Internet Archive).</li> <li><a rel="nofollow" class="external text" href="https://web.archive.org/web/20080304221129/http://ie.lbl.gov/education/parent/O_iso.htm">Luettelo hapen isotoopeista</a> The Isotopes Project Home Page <span style="font-size: 0.95em; position: relative;">(englanniksi)</span>)</li></ul> <div class="NavFrame" style="margin: auto; clear:both; color: var( --color-emphasized, #000000 ); background-color: var( 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