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

4He     Half-life Boson, 2p 2n Stable Spin 0 Parity 1 This isotope is stable and thus has no decay products, so instead we show decay chains that lead down to it. Atomic Weight 4.00260325415 Abundance 99.999863% Mass Excess 2.42491565MeV Binding Energy 7.073915MeV Magnetic Moment 0 μ Quadrupole Moment N/A   Show Element Pictures. Show Decay Image Full Size.

Decay chain image generated by Mathematica's GraphPlot and IsotopeData functions from Wolfram Research, Inc..