Th
Thorium-228
Protons (Z)
90
Neutrons (N)
138
Mass number
228
Half-Life
1.91 y
Abundance
---
Mass
228.029 u
Mass Excess
26,770.9 keV
Spin
0+
Discovered
1905
Binding energy per nucleon
7,645 keV
Neutron separation energy
7,105 keV
Proton separation energy
6,368 keV
Decay Mode
Decay chain
- ThThorium-228Z 90 · N 1381.91 y
- α~100%
- α~100%
- α100%
- α100%
- β⁻100%
- β⁻64.046%
- α100%