Mg
Magnesium-20
Protons (Z)
12
Neutrons (N)
8
Mass number
20
Half-Life
90.4 ms
Abundance
---
Mass
20.019 u
Mass Excess
17,477.7 keV
Spin
0+
Discovered
1974
Binding energy per nucleon
6,728 keV
Neutron separation energy
22,434 keV
Proton separation energy
2,740 keV
Decay Mode
Decay chain
- MgMagnesium-20Z 12 · N 890.4 ms
- β⁺69.7%
- β⁺75%