Input interpretation
W-178 (tungsten-178) | Db-270 (dubnium-270)
Decay properties
| W-178 | Db-270 half-life | 21.6 days (21.1 to 21.92 days) | 67 min mean lifetime | 31.1 days (30.7 to 31.63 days) | 83 min decay constant | 3.72×10^-7 per second | 2×10^-4 per second specific activity | 1260 TBq/g | 450000 TBq/g width | 2.44×10^-22 eV | 1×10^-19 eV decay modes | ϵ (electron capture) | α (alpha emission) | SF (spontaneous fission) final decay products | Hf-178 (100%) | Ce-140 (0%) | Dy-156 (0%) | Dy-160 (0%) | Dy-164 (0%) | Er-164 (0%) | Er-168 (0%) | Gd-156 (0%) | Hf-176 (0%) | Hf-180 (0%) | Pb-206 (0%) | Pb-208 (0%) | Sm-144 (0%) | Sm-152 (0%) | Tl-205 (0%) | W-184 (0%) | Yb-168 (0%) | Yb-172 (0%)
Decay modes
W-178
decay mode | ϵ (electron capture) branching ratio | 100% Q-value | 91.3 keV (kiloelectronvolts) daughter nuclide | Ta-178
Db-270
decay mode | α (alpha emission) Q-value | 8.2 MeV (megaelectronvolts) daughter nuclide | Lr-266 decay mode | SF (spontaneous fission)
Radiation shielding
Radiation shielding
Decay chain
W-178
Decay chain W-178
Db-270
Decay chain Db-270
Mass properties
| W-178 | Db-270 atomic number (Z) | 74 | 105 mass number (A) | 178 | 270 neutron number | 104 | 165 atomic mass | 177.945876236 u (unified atomic mass units) | 270.130712 u (unified atomic mass units) mass excess | -50.415962 MeV (megaelectronvolts) | 121.757 MeV (megaelectronvolts) binding energy per nucleon | 8.029308 MeV (megaelectronvolts) | 7.316 MeV (megaelectronvolts)
Mass properties
Nearby isotopes
Nearby isotopes
Quantum properties
| W-178 spin parity J^π | 0^+ (atomic boson) magnetic moment | 0 μ_N
Quantum properties