1-Hydrogen
Nuclide weight or level energy spin & parity abundance half-life sig(J32) sig(J33) sig(J40)
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H-nat 1.00794 +- 0.00007 XXX
H- 1 1.00782503223 +- 0.00000000009 1/2+ 99.9885 stable XXX XXX XXX
H- 2 2.01410177812 +- 0.00000000012 1+ 0.0115 stable XXX XXX XXX
H- 3 3.01604927790 +- 0.00000000237 1/2+ 12.32Y 2
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