Input interpretation
Pr-121 (praseodymium-121) | Nd-124 (neodymium-124)
Decay properties
| Pr-121 | Nd-124 half-life | 1.4 s (0 to 3 s) | 500 ms mean lifetime | 2 s (-0.5 to 5 s) | 721 ms decay constant | 0.5 per second | 1.39 per second specific activity | 2.5×10^9 TBq/g | 6.74×10^9 TBq/g width | 2.3×10^-16 eV | 9.12×10^-16 eV decay modes | p (proton emission) | β^+ (positron emission) | β^+p (positron + delayed proton) | β^+ (positron emission) final decay products | Sb-121 (0%) | Te-120 (0%) | Sn-115 (0%) | Sn-116 (0%) | Sn-119 (0%) | Sn-120 (0%) | Sb-123 (0%) | Te-124 (0%) | Xe-124 (0%)
Decay modes
Pr-121
decay mode | p (proton emission) Q-value | 837 keV (kiloelectronvolts) daughter nuclide | Ce-120 decay mode | β^+ (positron emission) Q-value | 10.103 MeV (megaelectronvolts) daughter nuclide | Ce-121 decay mode | β^+p (positron + delayed proton) daughter nuclide | La-120
Nd-124
decay mode | β^+ (positron emission) Q-value | 7.613 MeV (megaelectronvolts) daughter nuclide | Pr-124
Radiation shielding
Radiation shielding
Decay chain
Pr-121
Decay chain Pr-121
Nd-124
Decay chain Nd-124
Mass properties
| Pr-121 | Nd-124 atomic number (Z) | 59 | 60 mass number (A) | 121 | 124 neutron number | 62 | 64 atomic mass | 120.955364 u (unified atomic mass units) | 123.95223 u (unified atomic mass units) mass excess | -41.579 MeV (megaelectronvolts) | -44.497 MeV (megaelectronvolts) binding energy per nucleon | 8.033 MeV (megaelectronvolts) | 8.052 MeV (megaelectronvolts)
Mass properties
Nearby isotopes
Nearby isotopes
Quantum properties
| Pr-121 | Nd-124 spin parity J^π | 3/2^- (atomic boson) | 0^+ (atomic boson) magnetic moment | (unknown) | 0 μ_N
Quantum properties