Copper-67

Properties and data of the isotope ⁶⁷Cu.

Contents

General data

Name of the isotope:Copper-67; Cu-67Symbol:⁶⁷Cu or 6729CuMass number A:67 (= number of nucleons)Atomic number Z:29 (= number of protons)Neutrons N:38Isotopic mass:66.9277295(10) u (atomic weight of Copper-67)Nuclide mass:66.9118211 u (calculated nuclear mass without electrons)Mass excess:-67.31954 MeVMass defect:0.628463236 u (per nucleus)Nuclear binding energy:585.40973355 MeV (per nucleus)
8.73745871 MeV (average binding energy per nucleon)Separation energy:S_N = 9.1326(11) MeV (first neutron)
S_P = 8.6022(17) MeV (first proton)Half-life:61.83(12) hDecay constant λ:3.114036608262 × 10^-6 s^-1Specific activity α:2.841388954235 × 10⁺¹⁶ Bq g^-1
767942.9606043 Ci g^-1Spin and parity:
(nuclear angular momentum)3/2-Magnetic dipole moment:μ(μ_N) = +2.5171(6)Nuclear g-factor:g_l = 1.6780666666667Year of discovery:1948

Radioactive Decay

Half-life T_½ = 61.83(12) h (hours) respectively 2.22588 × 10⁵ seconds s.

Decay mode	Daughter	Probability	Decay energy	γ energy (intensity)
β^-	⁶⁷Zn	100 %	0.5608(8) MeV

Parent Nuclides

Direct parent isotope is: ⁶⁷Ni.

Isotones and Isobars

The following table shows the atomic nuclei that are isotonic (same neutron number N = 38) and isobaric (same nucleon number A = 67) with Copper-67. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.

Z	Isotone N = 38	Isobar A = 67
20	⁵⁸Ca
21	⁵⁹Sc
22	⁶⁰Ti
23	⁶¹V	⁶⁷V
24	⁶²Cr	⁶⁷Cr
25	⁶³Mn	⁶⁷Mn
26	⁶⁴Fe	⁶⁷Fe
27	⁶⁵Co	⁶⁷Co
28	⁶⁶Ni	⁶⁷Ni
29	⁶⁷Cu	⁶⁷Cu
30	⁶⁸Zn	⁶⁷Zn
31	⁶⁹Ga	⁶⁷Ga
32	⁷⁰Ge	⁶⁷Ge
33	⁷¹As	⁶⁷As
34	⁷²Se	⁶⁷Se
35	⁷³Br	⁶⁷Br
36	⁷⁴Kr	⁶⁷Kr
37	⁷⁵Rb
38	⁷⁶Sr
39	⁷⁷Y
40	⁷⁸Zr