Input interpretation
Md-260 (mendelevium-260)
Decay properties
half-life | 31.8 days (30.6 to 33 days) mean lifetime | 45.9 days (44 to 48 days) decay constant | 2.52×10^-7 per second specific activity | 584 TBq/g (terabecquerels per gram) width | 1.15×10^-22 eV (electronvolts) decay modes | ϵ (electron capture) | α (alpha emission) | β^- (electron emission) | SF (spontaneous fission) final decay products | Pb-208 (0.4%) | Pb-206 (1×10^-13) | Pb-204 (0) | Hg-200 (0) | Hg-204 (0)
Decay modes
decay mode | ϵ (electron capture) branching ratio | 5% Q-value | 907 keV (kiloelectronvolts) daughter nuclide | Fm-260 decay mode | α (alpha emission) branching ratio | 5% Q-value | 6.94 MeV (megaelectronvolts) daughter nuclide | Es-256 decay mode | β^- (electron emission) branching ratio | 3.5% Q-value | 940 keV (kiloelectronvolts) daughter nuclide | No-260 decay mode | SF (spontaneous fission)
Decay chain
Decay chain
Mass properties
atomic number (Z) | 101 mass number (A) | 260 neutron number | 159 atomic mass | 260.103652 u (unified atomic mass units) mass excess | 96.551 MeV (megaelectronvolts) binding energy per nucleon | 7.396 MeV (megaelectronvolts)
Mass properties
Nearby isotopes
Nearby isotopes