Zinc-80

Properties and data of the isotope ⁸⁰Zn.

Contents

See also: List of individual Zinc isotopes (and general data sources).

General data

Name of the isotope:Zinc-80; Zn-80Symbol:⁸⁰Zn or 8030ZnMass number A:80 (= number of nucleons)Atomic number Z:30 (= number of protons)Neutrons N:50Nucleon pairing (Z - N):even - evenNuclear ratio (N/Z ratio):1.6666666666667 (= neutron-proton ratio)Neutron excess (N-Z):20Isotopic mass:79.9445529(28) u (atomic weight of Zinc-80)Nuclide mass:79.928096 u (calculated nuclear mass without electrons)Mass excess:-51.64864 MeVMass defect:0.72344385999999 u (per nucleus)Nuclear binding energy:673.88361493 MeV (per nucleus)
8.42354519 MeV (average binding energy per nucleon)Separation energy:S_N = 6.288(3) MeV (first neutron)
S_P = 17.20(30) MeV (first proton)Half-life:561.9(30) msDecay constant λ:1.2335774702971 s^-1Specific activity α:9.403515554143 × 10⁺²¹ Bq g^-1
254149069030.91 Ci g^-1Spin and parity:
(nuclear angular momentum)0+Year of discovery:1981

Radioactive Decay

Half-life T_½ = 561.9(30) ms respectively 5.619 × 10^-1 seconds s.

Decay mode	Daughter	Probability	Decay energy	γ energy (intensity)
β^-	⁸⁰Ga	99 %	7.575(4) MeV
β^-, n	⁷⁹Ga	1.0(5) %	2.828(3) 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 = 80) with Zinc-80. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.

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