Copper-71
Properties and data of the isotope 71Cu.
See also: list of Copper isotopes.
General data
Name of the isotope:Copper-71; Cu-71Symbol:71Cu or 7129CuMass number A:71 (= number of nucleons)Atomic number Z:29 (= number of protons)Neutrons N:42Isotopic mass:70.9326768(16) u (atomic weight of Copper-71)Nuclide mass:70.9167684 u (calculated nuclear mass without electrons)Mass excess:-62.71116 MeVMass defect:0.65817560000001 u (per nucleus)Nuclear binding energy:613.08662235 MeV (per nucleus)
8.63502285 MeV (average binding energy per nucleon)Separation energy:SN = 7.8061(18) MeV (first neutron)
SP = 10.7862(26) MeV (first proton)Half-life:19.4(16) sDecay constant λ:0.035729236111337 s-1Specific activity α:3.073807038291 × 10+20 Bq g-1
8307586589.9773 Ci g-1Spin and parity:
(nuclear angular momentum)3/2(-)Magnetic dipole moment:μ(μN) = +2.2747(8)Quadrupole moment Q:0.190(16) barn (100 fm2)Nuclear g-factor:gl = 1.5164666666667Year of discovery:1983
Radioactive Decay
Half-life T½ = 19.4(16) s respectively 1.94 × 101 seconds s.
| Decay mode | Daughter | Probability | Decay energy | γ energy
(intensity) |
|---|
| β- | 71Zn | 100 % | 4.618(3) MeV | |
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 |
|---|
| 71mCu | 2755.7(6) keV | 0.271(14) μs | (19/2-) |
Isotones and Isobars
The following table shows the atomic nuclei that are isotonic (same neutron number N = 42) and isobaric (same nucleon number A = 71) with Copper-71. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.
| OZ | Isotone N = 42 | Isobar A = 71 |
|---|
| 23 | 65V | |
| 24 | 66Cr | |
| 25 | 67Mn | 71Mn |
| 26 | 68Fe | 71Fe |
| 27 | 69Co | 71Co |
| 28 | 70Ni | 71Ni |
| 29 | 71Cu | 71Cu |
| 30 | 72Zn | 71Zn |
| 31 | 73Ga | 71Ga |
| 32 | 74Ge | 71Ge |
| 33 | 75As | 71As |
| 34 | 76Se | 71Se |
| 35 | 77Br | 71Br |
| 36 | 78Kr | 71Kr |
| 37 | 79Rb | 71Rb |
| 38 | 80Sr | |
| 39 | 81Y | |
| 40 | 82Zr | |
| 41 | 83Nb | |
| 42 | 84Mo | |
| 43 | 85Tc | |
| 44 | 86Ru | |
External data and identifiers
Last update: 2020-10-14
Perma link: https://www.chemlin.org/isotope/copper-71
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