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Half-life period of Helium (He) |
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| Find half-life period of radioactive isotopes of different elements; find its decay type and list of particle emitted. Half-life is the time required for a quantity of radioactive element to reduce to half of its initial value. |
Half-life period of Helium (He)
| Element | Mass | Symbol | Decay Type | Half-Life |
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| Helium | 10 | 10He | | 1.52 x 10-21 seconds | | Helium | 5 | 5He | | 760 x 10-24 seconds | | Helium | 6 | 6He | | 806.7 milliseconds | | Helium | 7 | 7He | | 3.04 x 10-21 seconds | | Helium | 8 | 8He | | 119 milliseconds | | Helium | 9 | 9He | | 7 x 10-21 seconds |
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