See also: List of individual Technetium isotopes (and general data sources).
General data
Name of the isotope:Technetium-95m; Tc-95mSymbol:95mTc or 95m43TcMass number A:95 (= number of nucleons)Atomic number Z:43 (= number of protons)Neutrons N:52Nucleon pairing (Z - N):odd - evenNuclear ratio (N/Z ratio):1.2093023255814 (= neutron-proton ratio)Neutron excess (N-Z):9Excitation energy:38.91(4) keVIsotopic mass:94.907652(5) u (atomic weight of Technetium-95m)Nuclide mass:94.8840642 u (calculated nuclear mass without electrons)Mass excess:-86.02161 MeVMass defect:0.879400008 u (per nucleus)Nuclear binding energy:819.15583105 MeV (per nucleus) 8.62269296 MeV (average binding energy per nucleon)Half-life:61(2) dDecay constant λ:1.315269792333 × 10-7 s-1Specific activity α:8.345733626210 × 10+14 Bq g-1 22556.036827595 Ci g-1Spin and parity: (nuclear angular momentum)1/2-
Radioactive Decay
Half-life T½ = 61(2) d respectively 5.27 × 106 seconds s.
Decay mode
Daughter
Probability
Decay energy
γ energy (intensity)
EC/β+
95Mo
96.12(32) %
1.730 MeV
Iso
95Tc
3.88(32) %
0.039 MeV
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 = 52) and isobaric (same nucleon number A = 95) with Technetium-95m. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.
