See also: List of individual Technetium isotopes (and general data sources).
General data
Name of the isotope:Technetium-102m; Tc-102mSymbol:102mTc or 102m43TcMass number A:102 (= number of nucleons)Atomic number Z:43 (= number of protons)Neutrons N:59Nucleon pairing (Z - N):odd - oddNuclear ratio (N/Z ratio):1.3720930232558 (= neutron-proton ratio)Neutron excess (N-Z):16Excitation energy:+x keVIsotopic mass:101.909207(10) u (atomic weight of Technetium-102m)Nuclide mass:101.8856192 u (calculated nuclear mass without electrons)Mass excess:-84.57966 MeVMass defect:0.93850642000001 u (per nucleus)Nuclear binding energy:874.21309919 MeV (per nucleus) 8.57071666 MeV (average binding energy per nucleon)Half-life:4.35(7) minDecay constant λ:0.0026557363239845 s-1Specific activity α:1.569359583283 × 10+19 Bq g-1 424151238.72538 Ci g-1Spin and parity: (nuclear angular momentum)(4.5)
Radioactive Decay
Half-life T½ = 4.35(7) min (minutes) respectively 2.61 × 102 seconds s.
Decay mode
Daughter
Probability
Decay energy
γ energy (intensity)
β-
102Ru
98(2) %
4.530 MeV
Iso
102Tc
2(2) %
?
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 = 59) and isobaric (same nucleon number A = 102) with Technetium-102m. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.
