Input interpretation
Nd-146 (neodymium-146) | No-257 (nobelium-257)
Natural abundance
Nd-146 | No-257 17.2% | 0%
Decay properties
| Nd-146 | No-257 half-life | (stable) | 25 s (22.7 to 27.3 s) mean lifetime | (stable) | 36 s (32.8 to 39.3 s) decay constant | 0 per second | 0.028 per second specific activity | 0 Bq/g | 6.5×10^7 TBq/g width | 0 eV | 1.8×10^-17 eV decay modes | 2β^- (double beta decay) | α (alpha emission) | α (alpha emission) | β^+ (positron emission) final decay products | Nd-146 (100%) | Ba-138 (0%) | Ce-142 (0%) | Nd-142 (0%) | Tl-205 (100%) | Pb-207 (7×10^-10%)
Decay modes
Nd-146
decay mode | 2β^- (double beta decay) Q-value | 70.83 keV (kiloelectronvolts) daughter nuclide | Sm-146 decay mode | α (alpha emission) Q-value | 1.18251 MeV (megaelectronvolts) daughter nuclide | Ce-142
No-257
decay mode | α (alpha emission) branching ratio | 85% Q-value | 8.4661 MeV (megaelectronvolts) daughter nuclide | Fm-253 decay mode | β^+ (positron emission) branching ratio | 15% Q-value | 222.1 keV (kiloelectronvolts) daughter nuclide | Md-257
Radiation shielding
Radiation shielding
Decay chain
Nd-146
Decay chain Nd-146
No-257
Decay chain No-257
Mass properties
| Nd-146 | No-257 atomic number (Z) | 60 | 102 mass number (A) | 146 | 257 neutron number | 86 | 155 atomic mass | 145.913116939 u (unified atomic mass units) | 257.09687719 u (unified atomic mass units) mass excess | -80.93105 MeV (megaelectronvolts) | 90.240522 MeV (megaelectronvolts) binding energy per nucleon | 8.304127 MeV (megaelectronvolts) | 7.409683 MeV (megaelectronvolts)
Mass properties
Nearby isotopes
Nearby isotopes
Quantum properties
| Nd-146 | No-257 spin parity J^π | 0^+ (atomic boson) | 7/2^+ (atomic fermion) magnetic moment | 0 μ_N | (unknown)
Quantum properties