Input interpretation
Pt-198 (platinum-198) | Ra-222 (radium-222)
Natural abundance
Pt-198 | Ra-222 7.163% | 0%
Decay properties
| Pt-198 | Ra-222 half-life | (stable) | 38 s (37 to 39 s) mean lifetime | (stable) | 55 s (53.7 to 55.9 s) decay constant | 0 per second | 0.018 per second specific activity | 0 Bq/g | 4.9×10^7 TBq/g width | 0 eV | 1.2×10^-17 eV decay modes | 2β^- (double beta decay) | α (alpha emission) | α (alpha emission) | ^14C (cluster emission) final decay products | Pt-198 (100%) | Hg-198 (0%) | Pt-194 (0%) | Pb-206 (100%) | Pb-208 (3×10^-8%)
Decay modes
Pt-198
decay mode | 2β^- (double beta decay) Q-value | 1.04677 MeV (megaelectronvolts) daughter nuclide | Hg-198 decay mode | α (alpha emission) Q-value | 100.09 keV (kiloelectronvolts) daughter nuclide | Os-194
Ra-222
decay mode | α (alpha emission) branching ratio | 100% Q-value | 6.67883 MeV (megaelectronvolts) daughter nuclide | Rn-218 decay mode | ^14C (cluster emission) branching ratio | 3×10^-8% daughter nuclide | Pb-208
Radiation shielding
| Pt-198 lead | 21.8 µm water | 58.8 µm air | 53.5 mm
Decay chain
Pt-198
Decay chain Pt-198
Ra-222
Decay chain Ra-222
Mass properties
| Pt-198 | Ra-222 atomic number (Z) | 78 | 88 mass number (A) | 198 | 222 neutron number | 120 | 134 atomic mass | 197.96789279 u (unified atomic mass units) | 222.01537453 u (unified atomic mass units) mass excess | -29.907673 MeV (megaelectronvolts) | 14.321283 MeV (megaelectronvolts) binding energy per nucleon | 7.914169 MeV (megaelectronvolts) | 7.696687 MeV (megaelectronvolts)
Mass properties
Nearby isotopes
Nearby isotopes
Quantum properties
| Pt-198 | Ra-222 spin parity J^π | 0^+ (atomic boson) | 0^+ (atomic boson) magnetic moment | 0 μ_N | 0 μ_N
Quantum properties