Zinc-76

Properties and data of the isotope ⁷⁶Zn.

Contents

General data

Name of the isotope:Zinc-76; Zn-76Symbol:⁷⁶Zn or 7630ZnMass number A:76 (= number of nucleons)Atomic number Z:30 (= number of protons)Neutrons N:46Isotopic mass:75.9331150(16) u (atomic weight of Zinc-76)Nuclide mass:75.9166581 u (calculated nuclear mass without electrons)Mass excess:-62.30298 MeVMass defect:0.700222096 u (per nucleus)Nuclear binding energy:652.25268109 MeV (per nucleus)
8.58227212 MeV (average binding energy per nucleon)Separation energy:S_N = 7.8154(24) MeV (first neutron)
S_P = 15.1206(27) MeV (first proton)Half-life:5.7(3) sDecay constant λ:0.12160476851929 s^-1Specific activity α:9.764280603508 × 10⁺²⁰ Bq g^-1
26389947577.051 Ci g^-1Spin and parity:
(nuclear angular momentum)0+Year of discovery:1974

Radioactive Decay

Half-life T_½ = 5.7(3) s.

Decay mode	Daughter	Probability	Decay energy	γ energy (intensity)
β^-	⁷⁶Ga	100 %	3.9936(24) MeV

Parent Nuclides

Direct parent isotopes are: ⁷⁶Cu, ⁷⁷Cu.

Isotones and Isobars

The following table shows the atomic nuclei that are isotonic (same neutron number N = 46) and isobaric (same nucleon number A = 76) with Zinc-76. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.

Z	Isotone N = 46	Isobar A = 76
25	⁷¹Mn
26	⁷²Fe
27	⁷³Co	⁷⁶Co
28	⁷⁴Ni	⁷⁶Ni
29	⁷⁵Cu	⁷⁶Cu
30	⁷⁶Zn	⁷⁶Zn
31	⁷⁷Ga	⁷⁶Ga
32	⁷⁸Ge	⁷⁶Ge
33	⁷⁹As	⁷⁶As
34	⁸⁰Se	⁷⁶Se
35	⁸¹Br	⁷⁶Br
36	⁸²Kr	⁷⁶Kr
37	⁸³Rb	⁷⁶Rb
38	⁸⁴Sr	⁷⁶Sr
39	⁸⁵Y	⁷⁶Y
40	⁸⁶Zr
41	⁸⁷Nb
42	⁸⁸Mo
43	⁸⁹Tc
44	⁹⁰Ru
45	⁹¹Rh
46	⁹²Pd
47	⁹³Ag
48	⁹⁴Cd