Input interpretation
Bi-212 (bismuth-212)
Decay properties
half-life | 60.55 minutes (60.48 to 60.62 min) mean lifetime | 87.35 minutes (87.263 to 87.449 min) decay constant | 1.908×10^-4 per second specific activity | 542000 TBq/g (terabecquerels per gram) width | 1.256×10^-19 eV (electronvolts) decay modes | β^- (electron emission) | α (alpha emission) | β^-α (electron + delayed α) final decay products | Pb-208 (100%)
Decay modes
decay mode | β^- (electron emission) branching ratio | 64.05% Q-value | 2.25213 MeV (megaelectronvolts) daughter nuclide | Po-212 decay mode | α (alpha emission) branching ratio | 35.94% Q-value | 6.20726 MeV (megaelectronvolts) daughter nuclide | Tl-208 decay mode | β^-α (electron + delayed α) branching ratio | 0.014% Q-value | 11.20624 MeV (megaelectronvolts) daughter nuclide | Pb-208
Decay chain
Decay chain
Mass properties
atomic number (Z) | 83 mass number (A) | 212 neutron number | 129 atomic mass | 211.991285724 u (unified atomic mass units) mass excess | -8.117295 MeV (megaelectronvolts) binding energy per nucleon | 7.80331 MeV (megaelectronvolts)
Mass properties
Nearby isotopes
Nearby isotopes
Quantum properties
spin parity J^π | 1^- (atomic fermion)
Quantum properties
Excitations
E_level | spin parity J^π | half-life τ_1/2 | width Δ 115.183 keV (kiloelectronvolts) | 2^- | 8×10^-12 seconds | 6×10^-5 eV (electronvolts) 196 keV (kiloelectronvolts) | (unknown) | (unknown) | (unknown) 213.1 keV (kiloelectronvolts) | 3^- | (unknown) | (unknown) 238.632 keV (kiloelectronvolts) | 0^- | 1×10^-12 seconds | 4.6×10^-4 eV (electronvolts) 250 keV (kiloelectronvolts) | 8^- or 9^- (uncertain) | 1500 seconds | 3.04×10^-19 eV (electronvolts) 250.7 keV (kiloelectronvolts) | 4^- | (unknown) | (unknown) 338 keV (kiloelectronvolts) | (unknown) | (unknown) | (unknown) 415.272 keV (kiloelectronvolts) | 1^- | 1×10^-11 seconds | 4.6×10^-5 eV (electronvolts) 417.9 keV (kiloelectronvolts) | (unknown) | (unknown) | (unknown) 494.5 keV (kiloelectronvolts) | (unknown) | (unknown) | (unknown)