Plutonium-242 (Pu-242)
Identity
- Protons
- 94
- Neutrons
- 148
- Mass number
- 242
- Mass
- 242.1 ± 1.3 u
- Mass excess
- 54.717 MeV
- Spin
- 0+
Stability
Half-life: 3.75 × 10⁵ years
Natural occurrence
Not found in nature
Decays to
- alpha 100.0 % U-238
- spontaneous fission 0.00055 %