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Germanium-74

Properties and data of the isotope 74Ge.


Content

See also: list of Germanium isotopes.

 

General data

Name of the isotope:Germanium-74; Ge-74Symbol:74Ge or 7432GeMass number A:74 (= number of nucleons)Atomic number Z:32 (= number of protons)Neutrons N:42Isotopic mass:73.92117776(9) u (atomic weight of Germanium-74)Nuclide mass:73.9036238 u (calculated nuclear mass without electrons)Mass excess:-73.42244 MeVMass defect:0.693149736 u (per nucleus)Nuclear binding energy:645.66482019 MeV (per nucleus)
8.72520027 MeV (average binding energy per nucleon)
Separation energy:SN = 10.19624(6) MeV (first neutron)
SP = 11.0121(17) MeV (first proton)
Half-life:stableSpin and parity:
(nuclear angular momentum)
0+Charge radius:4.0742(11) femtometer fmYear of discovery:1923

 

Parent Nuclides

Direct parent isotopes are: 74As, 74Ga.

 

Occurrence

Comparison of the natural Germanium isotopes including isotopic abundance (mole fraction of the isotope mixture in percent):

 

Atomic Mass maQuantityHalf-lifeSpin
Germanium
Isotopic mixture
72.630 u100 %
Isotope 70Ge69.924249(6) u20.52(19) %stable0+
Isotope 72Ge71.9220758(5) u27.45(15) %stable0+
Isotope 73Ge72.9234590(4) u7.76(8) %stable9/2+
Isotope 74Ge73.92117776(9) u36.52(12) %stable0+
Isotope 76Ge75.9214027(2) u7.75(12) %1.926(94) × 1021 a0+

 

Isotones and Isobars

The following table shows the atomic nuclei that are isotonic (same neutron number N = 42) and isobaric (same nucleon number A = 74) with Germanium-74. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.

 

OZIsotone N = 42Isobar A = 74
2365V
2466Cr
2567Mn
2668Fe74Fe
2769Co74Co
2870Ni74Ni
2971Cu74Cu
3072Zn74Zn
3173Ga74Ga
3274Ge74Ge
3375As74As
3476Se74Se
3577Br74Br
3678Kr74Kr
3779Rb74Rb
3880Sr74Sr
3981Y
4082Zr
4183Nb
4284Mo
4385Tc
4486Ru

 

External data and identifiers

Adopted Levels, Gammas:NuDat 74Ge

 


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Last update: 2020-10-14


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