Input interpretation
Cf-254 (californium-254)
Decay properties
half-life | 60.5 days (60.2 to 60.81 days) mean lifetime | 87.3 days (86.92 to 87.66 days) decay constant | 1.33×10^-7 per second specific activity | 314 TBq/g (terabecquerels per gram) width | 8.73×10^-23 eV (electronvolts) decay modes | SF (spontaneous fission) | α (alpha emission) | 2β^- (double beta decay) final decay products | Pb-206 (8×10^-4) | Tl-205 (2×10^-11) | Pb-208 (2×10^-14) | W-184 (7×10^-17) | Yb-168 (4×10^-32) | Er-164 (3×10^-32) | Dy-160 (1×10^-33) | Dy-156 (9×10^-36) | Sm-144 (9×10^-37) | Ce-140 (9×10^-38) | Dy-164 (0) | Er-168 (0) | Gd-156 (0) | Hf-176 (0) | Hf-180 (0) | Sm-152 (0) | Yb-172 (0)
Decay modes
decay mode | SF (spontaneous fission) branching ratio | 100% decay mode | α (alpha emission) branching ratio | 0.31% Q-value | 5.92681 MeV (megaelectronvolts) daughter nuclide | Cm-250 decay mode | 2β^- (double beta decay) Q-value | 436.6 keV (kiloelectronvolts) daughter nuclide | Fm-254
Decay chain
Decay chain
Mass properties
atomic number (Z) | 98 mass number (A) | 254 neutron number | 156 atomic mass | 254.087322909 u (unified atomic mass units) mass excess | 81.340767 MeV (megaelectronvolts) binding energy per nucleon | 7.449228 MeV (megaelectronvolts)
Mass properties
Nearby isotopes
Nearby isotopes
Quantum properties
spin parity J^π | 0^+ (atomic boson) magnetic moment | 0 μ_N
Quantum properties