Input interpretation
Cf-256 (californium-256)
Decay properties
half-life | 12.3 minutes (11 to 13.6 min) mean lifetime | 17.67 minutes (16 to 19.49 min) decay constant | 9.434×10^-4 per second specific activity | 2.218×10^6 TBq/g (terabecquerels per gram) width | 6.18×10^-19 eV (electronvolts) decay modes | SF (spontaneous fission) | α (alpha emission) | 2β^- (double beta decay) final decay products | Pb-204 (0%) | Pb-206 (0%) | Pb-208 (0%) | Hg-200 (0%) | Hg-204 (0%)
Decay modes
decay mode | SF (spontaneous fission) branching ratio | 100% decay mode | α (alpha emission) branching ratio | 6.2×10^-7% Q-value | 5.558 MeV (megaelectronvolts) daughter nuclide | Cm-252 decay mode | 2β^- (double beta decay) Q-value | 1.553 MeV (megaelectronvolts) daughter nuclide | Fm-256
Decay chain
Decay chain
Mass properties
atomic number (Z) | 98 mass number (A) | 256 neutron number | 158 atomic mass | 256.09344 u (unified atomic mass units) mass excess | 87.039 MeV (megaelectronvolts) binding energy per nucleon | 7.432 MeV (megaelectronvolts)
Mass properties
Nearby isotopes
Nearby isotopes
Quantum properties
spin parity J^π | 0^+ (atomic boson) magnetic moment | 0 μ_N
Quantum properties