Input interpretation
Hf-172 (hafnium-172)
Decay properties
half-life | 1.9 years (1.839 to 1.904 yr) mean lifetime | 2.7 years (2.653 to 2.746 yr) decay constant | 1.18×10^-8 per second specific activity | 41.2 TBq/g (terabecquerels per gram) width | 7.73×10^-24 eV (electronvolts) decay modes | ϵ (electron capture) final decay products | Yb-172 (100%)
Decay mode
decay mode | ϵ (electron capture) Q-value | 337.8 keV (kiloelectronvolts) daughter nuclide | Lu-172
Decay chain
Decay chain
Mass properties
atomic number (Z) | 72 mass number (A) | 172 neutron number | 100 atomic mass | 171.939448301 u (unified atomic mass units) mass excess | -56.403544 MeV (megaelectronvolts) binding energy per nucleon | 8.071751 MeV (megaelectronvolts)
Mass properties
Nearby isotopes
Nearby isotopes
Quantum properties
spin parity J^π | 0^+ (atomic boson) magnetic moment | 0 μ_N
Quantum properties
Excitations
E_level | spin parity J^π | half-life τ_1/2 | width Δ 95.22 keV (kiloelectronvolts) | 2^+ | 1.55×10^-9 seconds | 2.94×10^-7 eV (electronvolts) 309.24 keV (kiloelectronvolts) | 4^+ | (unknown) | (unknown) 628.33 keV (kiloelectronvolts) | 6^+ | (unknown) | (unknown) 871.3 keV (kiloelectronvolts) | 0^+ | (unknown) | (unknown) 952.43 keV (kiloelectronvolts) | 2^+ | (unknown) | (unknown) 1031.06 keV (kiloelectronvolts) | 4^+ or 5^+ or 6^+ (uncertain) | (unknown) | (unknown) 1037.47 keV (kiloelectronvolts) | 8^+ | (unknown) | (unknown) 1075.29 keV (kiloelectronvolts) | 2^+ | (unknown) | (unknown) 1129.52 keV (kiloelectronvolts) | 4^+ | (unknown) | (unknown) 1180.87 keV (kiloelectronvolts) | 3^+ | (unknown) | (unknown)