Input interpretation
Db-256 (dubnium-256)
Decay properties
half-life | 1.6 seconds (1 to 2.7 s) mean lifetime | 2.3 seconds (1 to 4.1 s) decay constant | 0.43 per second specific activity | 1×10^9 TBq/g (terabecquerels per gram) width | 2×10^-16 eV (electronvolts) decay modes | β^+ (positron emission) | SF (spontaneous fission) | α (alpha emission) final decay products | Pb-208 (0.08%) | Pb-206 (3×10^-12%) | Hg-204 (4×10^-15%) | Pb-204 (0%) | Hg-200 (0%)
Decay modes
decay mode | β^+ (positron emission) branching ratio | 36% Q-value | 5.462 MeV (megaelectronvolts) daughter nuclide | Rf-256 decay mode | SF (spontaneous fission) decay mode | α (alpha emission) Q-value | 9.457 MeV (megaelectronvolts) daughter nuclide | Lr-252
Decay chain
Decay chain
Mass properties
atomic number (Z) | 105 mass number (A) | 256 neutron number | 151 atomic mass | 256.108127 u (unified atomic mass units) mass excess | 100.72 MeV (megaelectronvolts) binding energy per nucleon | 7.357 MeV (megaelectronvolts)
Mass properties
Nearby isotopes
Nearby isotopes