Copper-74

Properties and data of the isotope ⁷⁴Cu.

Content

General data

Name of the isotope:Copper-74; Cu-74Symbol:⁷⁴Cu or 7429CuMass number A:74 (= number of nucleons)Atomic number Z:29 (= number of protons)Neutrons N:45Isotopic mass:73.939875(7) u (atomic weight of Copper-74)Nuclide mass:73.9239666 u (calculated nuclear mass without electrons)Mass excess:-56.00608 MeVMass defect:0.676972148 u (per nucleus)Nuclear binding energy:630.59549403 MeV (per nucleus)
8.52156073 MeV (average binding energy per nucleon)Separation energy:S_N = 5.090(6) MeV (first neutron)
S_P = 13.187(7) MeV (first proton)Half-life:1.63(5) sDecay constant λ:0.42524366905518 s^-1Specific activity α:3.508051061433 × 10⁺²¹ Bq g^-1
94812190849.559 Ci g^-1Spin and parity:
(nuclear angular momentum)2-Magnetic dipole moment:μ(μ_N) = -1.068(3)Quadrupole moment Q:+0.27(3) barn (100 fm²)Nuclear g-factor:g_l = -0.534Year of discovery:1987

Radioactive Decay

Half-life T_½ = 1.63(5) s.

Decay mode	Daughter	Probability	Decay energy	γ energy (intensity)
β^-	⁷⁴Zn	100 %	9.751(7) MeV
β^-, n	⁷³Zn	?	1.516(6) MeV

Parent Nuclides

Direct parent isotope is: ⁷⁴Ni.

Isotones and Isobars

The following table shows the atomic nuclei that are isotonic (same neutron number N = 45) and isobaric (same nucleon number A = 74) with Copper-74. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.

OZ	Isotone N = 45	Isobar A = 74
25	⁷⁰Mn
26	⁷¹Fe	⁷⁴Fe
27	⁷²Co	⁷⁴Co
28	⁷³Ni	⁷⁴Ni
29	⁷⁴Cu	⁷⁴Cu
30	⁷⁵Zn	⁷⁴Zn
31	⁷⁶Ga	⁷⁴Ga
32	⁷⁷Ge	⁷⁴Ge
33	⁷⁸As	⁷⁴As
34	⁷⁹Se	⁷⁴Se
35	⁸⁰Br	⁷⁴Br
36	⁸¹Kr	⁷⁴Kr
37	⁸²Rb	⁷⁴Rb
38	⁸³Sr	⁷⁴Sr
39	⁸⁴Y
40	⁸⁵Zr
41	⁸⁶Nb
42	⁸⁷Mo
43	⁸⁸Tc
44	⁸⁹Ru
45	⁹⁰Rh
46	⁹¹Pd
47	⁹²Ag