See also: List of individual Copper isotopes (and general data sources).
General data
Name of the isotope:Copper-70m2; Cu-70m2Symbol:70m2Cu or 70m229CuMass number A:70 (= number of nucleons)Atomic number Z:29 (= number of protons)Neutrons N:41Nucleon pairing (Z - N):odd - oddNuclear ratio (N/Z ratio):1.4137931034483 (= neutron-proton ratio)Neutron excess (N-Z):12Excitation energy:242.6(5) keVIsotopic mass:69.9323921(12) u (atomic weight of Copper-70m2)Nuclide mass:69.9164837 u (calculated nuclear mass without electrons)Mass excess:-62.97635 MeVMass defect:0.649795384 u (per nucleus)Nuclear binding energy:605.28050142 MeV (per nucleus) 8.64686431 MeV (average binding energy per nucleon)Half-life:6.6(2) sDecay constant λ:0.10502230008484 s-1Specific activity α:9.043864439035 × 10+20 Bq g-1 24442876862.258 Ci g-1Spin and parity: (nuclear angular momentum)1+Magnetic dipole moment:μ(μN) = +1.7779(15)Quadrupole moment Q:-0.12(3) barn (100 fm2)Nuclear g-factor:gl = 1.7779
Radioactive Decay
Half-life T½ = 6.6(2) s.
Decay mode
Daughter
Probability
Decay energy
γ energy (intensity)
β-
70Zn
93.2(9) %
Iso
70Cu
6.8(9) %
Nuclear Isomers
Nuclear isomers or excited states with the activation energy in keV related to the ground state.
The following table shows the atomic nuclei that are isotonic (same neutron number N = 41) and isobaric (same nucleon number A = 70) with Copper-70m2. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.
