See also: List of individual Nickel isotopes (and general data sources).
General data
Name of the isotope:Nickel-78; Ni-78Symbol:78Ni or 7828NiMass number A:78 (= number of nucleons)Atomic number Z:28 (= number of protons)Neutrons N:50Nucleon pairing (Z - N):even - evenNuclear ratio (N/Z ratio):1.7857142857143 (= neutron-proton ratio)Neutron excess (N-Z):22Isotopic mass:77.96362(64) u (atomic weight of Nickel-78)Nuclide mass:77.9482602 u (calculated nuclear mass without electrons)Mass excess:-33.88775 MeVMass defect:0.68872669599999 u (per nucleus)Nuclear binding energy:641.54478496 MeV (per nucleus) 8.22493314 MeV (average binding energy per nucleon)Separation energy:SN = 5.16(78) MeV (first neutron) SP = 2.016(85) MeV (first proton)Half-life:0.11 sDecay constant λ:6.3013380050904 s-1Specific activity α:4.867339977670 × 10+22 Bq g-1 1315497291262.3 Ci g-1Spin and parity: (nuclear angular momentum)0+Year of discovery:1995
Radioactive Decay
Half-life T½ = 0.11 s respectively 1.1 × 10-1 seconds s.
Decay mode
Daughter
Probability
Decay energy
γ energy (intensity)
β-
78Cu
100 %
10.61(78) MeV
β-, n
77Cu
?
6.66(62) MeV
Isotones and Isobars
The following table shows the atomic nuclei that are isotonic (same neutron number N = 50) and isobaric (same nucleon number A = 78) with Nickel-78. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.
