Th
Thorium-218
Protons (Z)
90
Neutrons (N)
128
Mass number
218
Half-Life
122.0 ns
Abundance
---
Mass
218.013 u
Mass Excess
12,367.0 keV
Spin
0+
Discovered
1973
Binding energy per nucleon
7,692 keV
Neutron separation energy
7,910 keV
Proton separation energy
3,624 keV
Decay Mode
- α→Radium-214100%
Decay chain
- ThThorium-218Z 90 · N 128122.0 ns
- α100%
- α99.941%
- α96%
- β⁺94.55%
- β⁺100%