Input interpretation
Ce-142 (cerium-142) | Rn-198 (radon-198)
Natural abundance
Ce-142 | Rn-198 11.114% | 0
Decay properties
| Ce-142 | Rn-198 half-life | 50 quadrillion yr (9.2×10^8 to ∞ s) | 65 ms (61 to 69.1 ms) mean lifetime | 70 quadrillion yr (1.33×10^9 to ∞ s) | 94 ms (88.6 to 98.9 ms) decay constant | 4×10^-25 per second | 11 per second specific activity | 0.002 Bq/g | 3.2×10^10 TBq/g width | 2×10^-40 eV | 7×10^-15 eV decay modes | α (alpha emission) | 2β^- (double beta decay) | α (alpha emission) | β^+ (positron emission) final decay products | Ce-142 (100%) | Ba-138 (0) | Nd-142 (0) | W-182 (100%) | Pt-194 (0.9%) | Hf-178 (2×10^-10) | Hg-198 (0) | Os-190 (0)
Decay modes
Ce-142
decay mode | α (alpha emission) Q-value | 1.29824 MeV (megaelectronvolts) daughter nuclide | Ba-138 decay mode | 2β^- (double beta decay) Q-value | 1.41672 MeV (megaelectronvolts) daughter nuclide | Nd-142
Rn-198
decay mode | α (alpha emission) branching ratio | 99% Q-value | 7.3493 MeV (megaelectronvolts) daughter nuclide | Po-194 decay mode | β^+ (positron emission) branching ratio | 1% Q-value | 4.4191 MeV (megaelectronvolts) daughter nuclide | At-198
Radiation shielding
Radiation shielding
Decay chain
Ce-142
Decay chain Ce-142
Rn-198
Decay chain Rn-198
Mass properties
| Ce-142 | Rn-198 atomic number (Z) | 58 | 86 mass number (A) | 142 | 198 neutron number | 84 | 112 atomic mass | 141.909244205 u (unified atomic mass units) | 197.998678663 u (unified atomic mass units) mass excess | -84.538479 MeV (megaelectronvolts) | -1.230817 MeV (megaelectronvolts) binding energy per nucleon | 8.347108 MeV (megaelectronvolts) | 7.737726 MeV (megaelectronvolts)
Mass properties
Nearby isotopes
Nearby isotopes
Quantum properties
| Ce-142 | Rn-198 spin parity J^π | 0^+ (atomic boson) | 0^+ (atomic boson) magnetic moment | 0 μ_N | 0 μ_N
Quantum properties