Zinc-69

Properties and data of the isotope ⁶⁹Zn.

Content

General data

Name of the isotope:Zinc-69; Zn-69Symbol:⁶⁹Zn or 6930ZnMass number A:69 (= number of nucleons)Atomic number Z:30 (= number of protons)Neutrons N:39Isotopic mass:68.9265504(9) u (atomic weight of Zinc-69)Nuclide mass:68.9100935 u (calculated nuclear mass without electrons)Mass excess:-68.41786 MeVMass defect:0.646132284 u (per nucleus)Nuclear binding energy:601.86834575 MeV (per nucleus)
8.72272965 MeV (average binding energy per nucleon)Separation energy:S_N = 6.48207(16) MeV (first neutron)
S_P = 10.1398(18) MeV (first proton)Half-life:56.4(9) minDecay constant λ:0.00020483072711582 s^-1Specific activity α:1.813999251668 × 10⁺¹⁸ Bq g^-1
49027006.801859 Ci g^-1Spin and parity:
(nuclear angular momentum)1/2-Magnetic dipole moment:μ(μ_N) = +0.557(2)Nuclear g-factor:g_l = 1.114Year of discovery:1937

Radioactive Decay

Half-life T_½ = 56.4(9) min (minutes) respectively 3.384 × 10³ seconds s.

Decay mode	Daughter	Probability	Decay energy	γ energy (intensity)
β^-	⁶⁹Ga	100 %	0.9100(14) MeV

Parent Nuclides

Direct parent isotope is: ⁶⁹Cu.

Nuclear Isomers

Nuclear isomers or excited states with the activation energy in keV related to the ground state.

Nuclear Isomer	Excitation Energy	Half-life	Spin
^69mZn	438.636(18) keV	13.756(18) h	9/2+

Isotones and Isobars

The following table shows the atomic nuclei that are isotonic (same neutron number N = 39) and isobaric (same nucleon number A = 69) with Zinc-69. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.

OZ	Isotone N = 39	Isobar A = 69
21	⁶⁰Sc
22	⁶¹Ti
23	⁶²V
24	⁶³Cr
25	⁶⁴Mn	⁶⁹Mn
26	⁶⁵Fe	⁶⁹Fe
27	⁶⁶Co	⁶⁹Co
28	⁶⁷Ni	⁶⁹Ni
29	⁶⁸Cu	⁶⁹Cu
30	⁶⁹Zn	⁶⁹Zn
31	⁷⁰Ga	⁶⁹Ga
32	⁷¹Ge	⁶⁹Ge
33	⁷²As	⁶⁹As
34	⁷³Se	⁶⁹Se
35	⁷⁴Br	⁶⁹Br
36	⁷⁵Kr	⁶⁹Kr
37	⁷⁶Rb
38	⁷⁷Sr
39	⁷⁸Y
40	⁷⁹Zr
42	⁸¹Mo