Copper-79

Properties and data of the isotope ⁷⁹Cu.

Content

General data

Name of the isotope:Copper-79; Cu-79Symbol:⁷⁹Cu or 7929CuMass number A:79 (= number of nucleons)Atomic number Z:29 (= number of protons)Neutrons N:50Isotopic mass:78.95519(32) u (atomic weight of Copper-79)Nuclide mass:78.9392816 u (calculated nuclear mass without electrons)Mass excess:-41.74025 MeVMass defect:0.70498172799999 u (per nucleus)Nuclear binding energy:656.68624974 MeV (per nucleus)
8.31248417 MeV (average binding energy per nucleon)Separation energy:S_N = 5.31(59) MeV (first neutron)
S_P = 15.14(67) MeV (first proton)Half-life:241.0(32) msDecay constant λ:2.8761293799168 s^-1Specific activity α:2.220571315033 × 10⁺²² Bq g^-1
600154409468.51 Ci g^-1Spin and parity:
(nuclear angular momentum)Year of discovery:1991

Radioactive Decay

Half-life T_½ = 241.0(32) ms respectively 2.410 × 10^-1 seconds s.

Decay mode	Daughter	Probability	Decay energy
β^-	⁷⁹Zn	34 %	11.69(30) MeV
β^-, n	⁷⁸Zn	66(12) %	7.67(30) MeV
β^-, 2n	⁷⁷Zn	?

Isotones and Isobars

The following table shows the atomic nuclei that are isotonic (same neutron number N = 50) and isobaric (same nucleon number A = 79) with Copper-79. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.

OZ	Isotone N = 50	Isobar A = 79
28	⁷⁸Ni	⁷⁹Ni
29	⁷⁹Cu	⁷⁹Cu
30	⁸⁰Zn	⁷⁹Zn
31	⁸¹Ga	⁷⁹Ga
32	⁸²Ge	⁷⁹Ge
33	⁸³As	⁷⁹As
34	⁸⁴Se	⁷⁹Se
35	⁸⁵Br	⁷⁹Br
36	⁸⁶Kr	⁷⁹Kr
37	⁸⁷Rb	⁷⁹Rb
38	⁸⁸Sr	⁷⁹Sr
39	⁸⁹Y	⁷⁹Y
40	⁹⁰Zr	⁷⁹Zr
41	⁹¹Nb
42	⁹²Mo
43	⁹³Tc
44	⁹⁴Ru
45	⁹⁵Rh
46	⁹⁶Pd
47	⁹⁷Ag
48	⁹⁸Cd
49	⁹⁹In
50	¹⁰⁰Sn