Element:He
From Metabolomics.JP
Atomic Number
2
Atomic Name
Helium(ヘリウム)
Stable Isotopes
| isotope | mass | isotopic abundance (%) |
|---|---|---|
| ３He | 3.0160293094 | 0.000134(3) |
| 4He | 4.0026032497 | 99.999866(3) |
Radioisotopes
| isotope | half life | disintegration form |
|---|---|---|
