See also: List of individual Germanium isotopes (and general data sources).
General data
Name of the isotope:Germanium-67; Ge-67Symbol:67Ge or 6732GeMass number A:67 (= number of nucleons)Atomic number Z:32 (= number of protons)Neutrons N:35Nucleon pairing (Z - N):even - oddNuclear ratio (N/Z ratio):1.09375 (= neutron-proton ratio)Neutron excess (N-Z):3Isotopic mass:66.932734(5) u (atomic weight of Germanium-67)Nuclide mass:66.91518 u (calculated nuclear mass without electrons)Mass excess:-62.65788 MeVMass defect:0.620939084 u (per nucleus)Nuclear binding energy:578.40103111 MeV (per nucleus) 8.63285121 MeV (average binding energy per nucleon)Separation energy:SN = 9.123(5) MeV (first neutron) SP = 6.224(5) MeV (first proton)Half-life:18.9(3) minDecay constant λ:0.00061124089996468 s-1Specific activity α:5.499519469586 × 10+18 Bq g-1 148635661.34017 Ci g-1Spin and parity: (nuclear angular momentum)1/2-Mirror nucleus:Bromine-67Year of discovery:1950
Radioactive Decay
Half-life T½ = 18.9(3) min (minutes) respectively 1.134 × 103 seconds s.
The following table shows the atomic nuclei that are isotonic (same neutron number N = 35) and isobaric (same nucleon number A = 67) with Germanium-67. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.
