He
Helium-3
Protons (Z)
2
Neutrons (N)
1
Mass number
3
Half-Life
Stable
Abundance
0.0002%
Mass
3.016 u
Mass Excess
14,931.219 keV
Spin
1/2+
Discovered
1934
Binding energy per nucleon
2,573 keV
Neutron separation energy
---
Proton separation energy
5,493 keV
Decay Mode
---