See also: List of individual Tantalum isotopes (and general data sources).
General data
Name of the isotope:Tantalum-182m2; Ta-182m2Symbol:182m2Ta or 182m273TaMass number A:182 (= number of nucleons)Atomic number Z:73 (= number of protons)Neutrons N:109Nucleon pairing (Z - N):odd - oddNuclear ratio (N/Z ratio):1.4931506849315 (= neutron-proton ratio)Neutron excess (N-Z):36Excitation energy:519.577(16) keVIsotopic mass:181.9501554(15) u (atomic weight of Tantalum-182m2)Nuclide mass:181.910113 u (calculated nuclear mass without electrons)Mass excess:-46.42995 MeVMass defect:1.56554778 u (per nucleus)Nuclear binding energy:1458.29836378 MeV (per nucleus) 8.01262837 MeV (average binding energy per nucleon)Half-life:15.84(10) minDecay constant λ:0.00072932152836695 s-1Specific activity α:2.41389016319 × 10+18 Bq g-1 65240274.681027 Ci g-1Spin and parity: (nuclear angular momentum)10-
Radioactive Decay
Half-life T½ = 15.84(10) min (minutes) respectively 9.504 × 102 seconds s.
Decay mode
Daughter
Probability
Decay energy
γ energy (intensity)
Iso
182Ta
100 %
Nuclear Isomers
Nuclear isomers or excited states with the activation energy in keV related to the ground state.
The following table shows the atomic nuclei that are isotonic (same neutron number N = 109) and isobaric (same nucleon number A = 182) with Tantalum-182m2. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.
