Thorium-230 (Th-230)
Identity
- Protons
- 90
- Neutrons
- 140
- Mass number
- 230
- Mass
- 230.0 ± 1.3 u
- Mass excess
- 30.863 MeV
- Spin
- 0+
Stability
Half-life: 7.54 × 10⁴ years
Natural occurrence
0.0200 % of thorium
Decays to
- alpha 100.0 % Ra-226
- spontaneous fission 4.0e-12 %