See also: List of individual Germanium isotopes (and general data sources).
General data
Name of the isotope:Germanium-79; Ge-79Symbol:79Ge or 7932GeMass number A:79 (= number of nucleons)Atomic number Z:32 (= number of protons)Neutrons N:47Nucleon pairing (Z - N):even - oddNuclear ratio (N/Z ratio):1.46875 (= neutron-proton ratio)Neutron excess (N-Z):15Isotopic mass:78.92536(4) u (atomic weight of Germanium-79)Nuclide mass:78.907806 u (calculated nuclear mass without electrons)Mass excess:-69.52671 MeVMass defect:0.73229207600001 u (per nucleus)Nuclear binding energy:682.12567504 MeV (per nucleus) 8.63450222 MeV (average binding energy per nucleon)Separation energy:SN = 5.74(4) MeV (first neutron) SP = 13.11(4) MeV (first proton)Half-life:18.98(3) sDecay constant λ:0.036519872526868 s-1Specific activity α:2.786529106665 × 10+20 Bq g-1 7531159747.7446 Ci g-1Spin and parity: (nuclear angular momentum)(1/2)-Year of discovery:1970
Radioactive Decay
Half-life T½ = 18.98(3) s respectively 1.898 × 101 seconds s.
The following table shows the atomic nuclei that are isotonic (same neutron number N = 47) and isobaric (same nucleon number A = 79) with Germanium-79. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.
