Zinc-69m

Properties and data of the isotope ⁶⁹Zn.

Content

General data

Name of the isotope:Zinc-69m; Zn-69mSymbol: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-69m)
Excitation energy: 438.636(18) keVNuclide 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)Half-life:13.756(18) hDecay constant λ:1.399686562146 × 10^-5 s^-1Specific activity α:1.239574946618 × 10⁺¹⁷ Bq g^-1
3350202.5584289 Ci g^-1Spin and parity:
(nuclear angular momentum)9/2+Magnetic dipole moment:μ(μ_N) = 1.157(2)Quadrupole moment Q:-0.51(5) barn (100 fm²)Nuclear g-factor:g_l = 0.25711111111111

Radioactive Decay

Half-life T_½ = 13.756(18) h (hours) respectively 4.95216 × 10⁴ seconds s.

Decay mode	Daughter	Probability	Decay energy	γ energy (intensity)
Iso	⁶⁹Zn	99.967(3) %
β^-	⁶⁹Ga	0.033(3) %

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
⁶⁹Zn		56.4(9) min	1/2-

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-69m. 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