Input interpretation
Fm-253 (fermium-253) | Ag-110 (silver-110)
Decay properties
| Fm-253 | Ag-110 half-life | 72 h (68.3 to 84 h) | 24.6 s (24.37 to 24.83 s) mean lifetime | 100 h (98.9 to 110 h) | 35.5 s (35.18 to 35.8 s) decay constant | 2.7×10^-6 per second | 0.0282 per second specific activity | 6400 TBq/g | 1.54×10^8 TBq/g width | 1.8×10^-21 eV | 1.85×10^-17 eV decay modes | ϵ (electron capture) | α (alpha emission) | β^- (electron emission) | ϵ (electron capture) final decay products | Tl-205 (100%) | Pb-207 (7×10^-12) | Cd-110 (100%) | Pd-110 (0.3%)
Decay modes
Fm-253
decay mode | ϵ (electron capture) branching ratio | 88% Q-value | 335.84 keV (kiloelectronvolts) daughter nuclide | Es-253 decay mode | α (alpha emission) branching ratio | 12% Q-value | 7.199 MeV (megaelectronvolts) daughter nuclide | Cf-249
Ag-110
decay mode | β^- (electron emission) branching ratio | 100% Q-value | 2.89244 MeV (megaelectronvolts) daughter nuclide | Cd-110 decay mode | ϵ (electron capture) branching ratio | 0.3% Q-value | 888.6 keV (kiloelectronvolts) daughter nuclide | Pd-110
Radiation shielding
| Fm-253 lead | 2.03 mm portland concrete | 7.39 mm water | 14.6 mm air | 12.5 m
Decay chain
Fm-253
Decay chain Fm-253
Ag-110
Decay chain Ag-110
Mass properties
| Fm-253 | Ag-110 atomic number (Z) | 100 | 47 mass number (A) | 253 | 110 neutron number | 153 | 63 atomic mass | 253.085185236 u (unified atomic mass units) | 109.906107231 u (unified atomic mass units) mass excess | 79.349538 MeV (megaelectronvolts) | -87.460552 MeV (megaelectronvolts) binding energy per nucleon | 7.448455 MeV (megaelectronvolts) | 8.532138 MeV (megaelectronvolts)
Mass properties
Nearby isotopes
Nearby isotopes
Quantum properties
| Fm-253 | Ag-110 spin parity J^π | 1/2^+ (atomic fermion) | 1^+ (atomic fermion) magnetic moment | (unknown) | 2.7271 μ_N electric quadrupole moment | (unknown) | 0.24 eb (electron barns)
Quantum properties