Input interpretation
W-178 (tungsten-178)
Decay properties
half-life | 21.6 days (21.1 to 21.92 days) mean lifetime | 31.1 days (30.7 to 31.63 days) decay constant | 3.72×10^-7 per second specific activity | 1260 TBq/g (terabecquerels per gram) width | 2.44×10^-22 eV (electronvolts) decay modes | ϵ (electron capture) final decay products | Hf-178 (100%)
Decay mode
decay mode | ϵ (electron capture) Q-value | 91.3 keV (kiloelectronvolts) daughter nuclide | Ta-178
Decay chain
Decay chain
Mass properties
atomic number (Z) | 74 mass number (A) | 178 neutron number | 104 atomic mass | 177.945876236 u (unified atomic mass units) mass excess | -50.415962 MeV (megaelectronvolts) binding energy per nucleon | 8.029308 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 106.06 keV (kiloelectronvolts) | 2^+ | (unknown) | (unknown) 343.29 keV (kiloelectronvolts) | 4^+ | (unknown) | (unknown) 694.9 keV (kiloelectronvolts) | 6^+ | (unknown) | (unknown) 997 keV (kiloelectronvolts) | 0^+ | (unknown) | (unknown) 1045 keV (kiloelectronvolts) | 2^- | (unknown) | (unknown) 1082.8 keV (kiloelectronvolts) | 2^+ | (unknown) | (unknown) 1110.8 keV (kiloelectronvolts) | 2^+ | (unknown) | (unknown) 1120.9 keV (kiloelectronvolts) | 3^- | (unknown) | (unknown) 1142.6 keV (kiloelectronvolts) | 8^+ | (unknown) | (unknown) 1226 keV (kiloelectronvolts) | 4^- | (unknown) | (unknown)