Input interpretation
Ir-170 (iridium-170)
Decay properties
half-life | 870 ms (milliseconds) (0.73 to 1.07 s) mean lifetime | 1.26 seconds (1.05 to 1.55 s) decay constant | 0.797 per second specific activity | 2.82×10^9 TBq/g (terabecquerels per gram) width | 3.63×10^-16 eV (electronvolts) decay modes | β^+ (positron emission) | α (alpha emission) final decay products | Yb-170 (86%) | Er-166 (9%) | Er-162 (2.9×10^-5) | Dy-158 (2×10^-9) | Nd-142 (5×10^-14) | Dy-162 (0) | Gd-154 (0) | Gd-158 (0) | Sm-150 (0)
Decay modes
decay mode | β^+ (positron emission) branching ratio | 94.8% Q-value | 9.586 MeV (megaelectronvolts) daughter nuclide | Os-170 decay mode | α (alpha emission) branching ratio | 5.2% Q-value | 6.105 MeV (megaelectronvolts) daughter nuclide | Re-166
Decay chain
Decay chain
Mass properties
atomic number (Z) | 77 mass number (A) | 170 neutron number | 93 atomic mass | 169.974965 u (unified atomic mass units) mass excess | -23.32 MeV (megaelectronvolts) binding energy per nucleon | 7.854 MeV (megaelectronvolts)
Mass properties
Nearby isotopes
Nearby isotopes
Quantum properties
spin parity J^π | 3^- (atomic fermion)
Quantum properties