Germanium-73m2

Properties and data of the isotope ^73m2Ge.

Contents

See also: List of individual Germanium isotopes (and general data sources).

General data

Name of the isotope:Germanium-73m2; Ge-73m2Symbol:^73m2Ge or 73m232GeMass number A:73 (= number of nucleons)Atomic number Z:32 (= number of protons)Neutrons N:41Nucleon pairing (Z - N):even - oddNuclear ratio (N/Z ratio):1.28125 (= neutron-proton ratio)Neutron excess (N-Z):9Excitation energy:66.725(9) keVIsotopic mass:72.9234590(4) u (atomic weight of Germanium-73m2)Nuclide mass:72.905905 u (calculated nuclear mass without electrons)Mass excess:-71.29748 MeVMass defect:0.68220358000001 u (per nucleus)Nuclear binding energy:635.46854155 MeV (per nucleus)
8.70504851 MeV (average binding energy per nucleon)Half-life:499(11) msDecay constant λ:1.3890725061322 s^-1Specific activity α:1.161831985637 × 10⁺²² Bq g^-1
314008644767 Ci g^-1Spin and parity:
(nuclear angular momentum)1/2-

Radioactive Decay

Half-life T_½ = 499(11) ms respectively 4.99 × 10^-1 seconds s.

Decay mode	Daughter	Probability	Decay energy	γ energy (intensity)
Iso	⁷³Ge	100 %

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
^73m1Ge	13.2845(15) keV	0.499(11) s	5/2+
⁷³Ge		stable	9/2+

Isotones and Isobars

The following table shows the atomic nuclei that are isotonic (same neutron number N = 41) and isobaric (same nucleon number A = 73) with Germanium-73m2. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.

Z	Isotone N = 41	Isobar A = 73
21	⁶²Sc
22	⁶³Ti
23	⁶⁴V
24	⁶⁵Cr
25	⁶⁶Mn
26	⁶⁷Fe	⁷³Fe
27	⁶⁸Co	⁷³Co
28	⁶⁹Ni	⁷³Ni
29	⁷⁰Cu	⁷³Cu
30	⁷¹Zn	⁷³Zn
31	⁷²Ga	⁷³Ga
32	⁷³Ge	⁷³Ge
33	⁷⁴As	⁷³As
34	⁷⁵Se	⁷³Se
35	⁷⁶Br	⁷³Br
36	⁷⁷Kr	⁷³Kr
37	⁷⁸Rb	⁷³Rb
38	⁷⁹Sr	⁷³Sr
39	⁸⁰Y
40	⁸¹Zr
41	⁸²Nb
42	⁸³Mo
44	⁸⁵Ru