Input interpretation
Ac-213 (actinium-213)
Decay properties
half-life | 738 ms (milliseconds) (715 to 761 ms) mean lifetime | 1.06 seconds (1.03 to 1.1 s) decay constant | 0.939 per second specific activity | 2.66×10^9 TBq/g (terabecquerels per gram) width | 4.28×10^-16 eV (electronvolts) decay modes | α (alpha emission) | β^+ (positron emission) final decay products | Au-197 (0) | Hg-201 (0) | Tl-205 (0)
Decay modes
decay mode | α (alpha emission) Q-value | 7.4993 MeV (megaelectronvolts) daughter nuclide | Fr-209 decay mode | β^+ (positron emission) Q-value | 4.7751 MeV (megaelectronvolts) daughter nuclide | Ra-213
Decay chain
Decay chain
Mass properties
atomic number (Z) | 89 mass number (A) | 213 neutron number | 124 atomic mass | 213.006607643 u (unified atomic mass units) mass excess | 6.15498 MeV (megaelectronvolts) binding energy per nucleon | 7.715524 MeV (megaelectronvolts)
Mass properties
Nearby isotopes
Nearby isotopes
Quantum properties
spin parity J^π | 9/2^- (atomic boson)
Quantum properties