Hailium

Hailium

Stoo kemmigagh	bunstoo kemmigagh
Hailium ayns taabyl ny bunstooghyn
Cowrey kemmigagh	He
Earroo breneenagh	2
Glout breneenagh	4.002602
Cummey lectraneyn	1s²
Çhymcheayrt, Possan	çhymcheayrt 1 gas ooasle
Troyn fishigagh
Glooid	0.1785 kg/m⁻³
Y point-lheie	−272.05, no value, 0.95 as −458
Y point-broie	−268.9 as −452.07
Co-effaght aascellagh	1.000036
Lectro-yiooldaght	4.5
Shennaghys
Feddynit magh ec	Pierre Janssen (en) , Norman Lockyer (en) as William Ramsay
Feddynys	Luanistyn 18, 1868
Epennym	Helios (en)

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.

William Ramsay

Hailium

She 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.