Element:He

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Latest revision as of 20:00, 27 February 2008

[edit] Atomic Number

2

[edit] Atomic Name

Helium(ヘリウム)

[edit] Stable Isotopes

isotope	mass	isotopic abundance (%)
３He	3.0160293094	0.000134(3)
4He	4.0026032497	99.999866(3)

[edit] Radioisotopes

isotope	half life	disintegration form

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