| Revision as of 02:33, 2 July 2019 editGuy Macon (talk | contribs)Extended confirmed users, File movers, New page reviewers, Pending changes reviewers, Rollbackers59,290 edits testTag: Replaced← Previous edit |
Latest revision as of 04:59, 30 June 2021 edit undoGuy Macon (talk | contribs)Extended confirmed users, File movers, New page reviewers, Pending changes reviewers, Rollbackers59,290 edits Purposely blanking this pageTag: Replaced |
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{{Infobox element |
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|name=helium |
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|number=2 |
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|symbol=He |
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|category=noble gas |
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|appearance=colorless gas |
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|isotopes= |
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! style="text-align:right;" | {{#if: Helium-3 | ] | <sup>3</sup>He }} |
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| style="{{#ifexpr:{{#invoke:string|find|source=0.0002%|target=%%$|plain=false}}>0|text-align:right}}" | 0.0002% |
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| colspan="3" style="text-align:center;" | {{#ifeq:yes|yes|]|stable}}<!-- |
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--> |
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! style="text-align:right;" | {{#if: Helium-4 | ] | <sup>4</sup>He }} |
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| style="{{#ifexpr:{{#invoke:string|find|source=99.9998%|target=%%$|plain=false}}>0|text-align:right}}" | 99.9998% |
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| colspan="3" style="text-align:center;" | {{#ifeq:no|yes|]|stable}}<!-- |
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--> |
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|naming=after ], Greek ] of the Sun |
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|discovered by=], ] |
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|discovery date=1868 |
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|first isolation by=], ], ] |
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|first isolation date=1895 |
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|QID=Q560 |
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}} |
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