See also: List of individual Technetium isotopes (and general data sources).
General data
Name of the isotope:Technetium-101; Tc-101Symbol:101Tc or 10143TcMass number A:101 (= number of nucleons)Atomic number Z:43 (= number of protons)Neutrons N:58Nucleon pairing (Z - N):odd - evenNuclear ratio (N/Z ratio):1.3488372093023 (= neutron-proton ratio)Neutron excess (N-Z):15Isotopic mass:100.907305(26) u (atomic weight of Technetium-101)Nuclide mass:100.8837172 u (calculated nuclear mass without electrons)Mass excess:-86.34484 MeVMass defect:0.93173650400001 u (per nucleus)Nuclear binding energy:867.90696306 MeV (per nucleus) 8.59313825 MeV (average binding energy per nucleon)Separation energy:SN = 8.395(24) MeV (first neutron) SP = 7.441(24) MeV (first proton)Half-life:14.22(1) minDecay constant λ:0.00081240879109229 s-1Specific activity α:4.848449866557 × 10+18 Bq g-1 131039185.58264 Ci g-1Spin and parity: (nuclear angular momentum)9/2+Year of discovery:1941
Radioactive Decay
Half-life T½ = 14.22(1) min (minutes) respectively 8.532 × 102 seconds s.
The following table shows the atomic nuclei that are isotonic (same neutron number N = 58) and isobaric (same nucleon number A = 101) with Technetium-101. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.
