Hailium
bunstoo lesh y chowrey kemmigagh He as yn earroo breneenagh 2
She bunstoo eh hailium (ASE: [ˈheːlʲʊm]). She yn trimmid breneenagh ta echey ny 4.002602 g·mol−1. Ta earroo breneenagh 2 as cowrey He er.
  | |
| Stoo kemmigagh | bunstoo kemmigagh as atmophile element (en)  |
|---|---|
| Hailium ayns taabyl ny bunstooghyn | |
| Cowrey kemmigagh | He |
| Earroo breneenagh | 2 |
| Glout breneenagh | 4.002602 |
| Cummey lectraneyn | 1s² |
| Possan as çhymcheayrt | çhymcheayrt 1 gas ooasle |
| Troyn fishigagh | |
| Glooid | 0.1786 g/L tra t'eh ny ushlagh: (ec y phoynt-lheie) 0.145 g/cm³ (ec y phoynt-broie) 0.125 g/cm³ |
| Y point-lheie | 0.95 K (−272.20 °C, −457.96 °F) (ec 2.5 MPa) |
| Y point-broie | 4.222 K (−268.928 °C, −452.070 °F) |
| Co-effaght aascellagh | 1.000036 |
| Lectro-yiooldaght | 4.5 |
| Shennaghys | |
| Feddynit magh ec | Pierre Janssen (en) , Norman Lockyer (en) as William Ramsay |
| Feddynys | 18 Luanistyn 1868 |
| Epennym | Helios (en) |
 | |
William Ramsay
reaghShe William Ramsay (1852-1916) y kemmigagh Albinagh ren feddyn magh queig jeh ny gassyn ooasle. V'eh ruggit ayns Glaschu, as ren eh studeyrys er kemmig 'sy Ghermaan fo stiurey Robert Bunsen. Ta sleih cooinaghtyn er Ramsay er yn oyr dy dooar eh magh argon (1894), hailium (1895), neoin (1898), krypton (1898) as xenon (1898). Scarr eh neoin, krypton, as xenon veih aer va jeant ny ushlagh. Chossyn William Ramsay Aundyr Nobel ayns 1904 son geddyn ny queig gassyn ooasle imraait heose.
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