Zinc-59

Properties and data of the isotope ⁵⁹Zn.

Contents

General data

Name of the isotope:Zinc-59; Zn-59Symbol:⁵⁹Zn or 5930ZnMass number A:59 (= number of nucleons)Atomic number Z:30 (= number of protons)Neutrons N:29Isotopic mass:58.9493120(8) u (atomic weight of Zinc-59)Nuclide mass:58.9328551 u (calculated nuclear mass without electrons)Mass excess:-47.21557 MeVMass defect:0.53672152400001 u (per nucleus)Nuclear binding energy:499.95287928 MeV (per nucleus)
8.47377761 MeV (average binding energy per nucleon)Separation energy:S_N = 12.99(5) MeV (first neutron)
S_P = 2.8368(7) MeV (first proton)Half-life:178.6(18) msDecay constant λ:3.8810032506156 s^-1Specific activity α:4.029646250530 × 10⁺²² Bq g^-1
1089093581224.6 Ci g^-1Spin and parity:
(nuclear angular momentum)3/2-Mirror nucleus:Copper-59Year of discovery:1981

Radioactive Decay

Half-life T_½ = 178.6(18) ms respectively 1.786 × 10^-1 seconds s.

Decay mode	Daughter	Probability	Decay energy	γ energy (intensity)
EE/β⁺	⁵⁹Cu	99.9 %	9.1428(9) MeV
ε, p	⁵⁸Ni	0.10(3) %

Isotones and Isobars

The following table shows the atomic nuclei that are isotonic (same neutron number N = 29) and isobaric (same nucleon number A = 59) with Zinc-59. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.

Z	Isotone N = 29	Isobar A = 59
13	⁴²Al
14	⁴³Si
15	⁴⁴P
16	⁴⁵S
17	⁴⁶Cl
18	⁴⁷Ar
19	⁴⁸K
20	⁴⁹Ca
21	⁵⁰Sc	⁵⁹Sc
22	⁵¹Ti	⁵⁹Ti
23	⁵²V	⁵⁹V
24	⁵³Cr	⁵⁹Cr
25	⁵⁴Mn	⁵⁹Mn
26	⁵⁵Fe	⁵⁹Fe
27	⁵⁶Co	⁵⁹Co
28	⁵⁷Ni	⁵⁹Ni
29	⁵⁸Cu	⁵⁹Cu
30	⁵⁹Zn	⁵⁹Zn
31	⁶⁰Ga	⁵⁹Ga
32	⁶¹Ge	⁵⁹Ge
33	⁶²As
34	⁶³Se