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Isotopes of Helium (click to see decay chain): 2He  3He  4He  5He  6He  7He  8He  9He  10He

8He     Half-life Boson, 2p 6n 119 ms Spin 0 Parity 1 Hide Decay Modes Probability Mode Decay Energy Daughter 83% β- 10.6512MeV 8Li 16% β-n 8.61859MeV 7Li 0.9% β-t N/A 5He Hide Ultimate Decay Products Yield Nuclide 83.9% 4He 16% 7Li Atomic Weight 8.033921897 Abundance None Mass Excess 31.598044MeV Binding Energy 3.925975MeV Magnetic Moment 0 μ Quadrupole Moment N/A   Show Element Pictures. Also show decay chains leading to this isotope. Show only decays with probability >0.1%.

Click any isotope in diagram to see its data. Decay chain image generated by Mathematica's GraphPlot and IsotopeData functions from Wolfram Research, Inc..