Germanium-83

Properties and data of the isotope ⁸³Ge.

Contents

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

General data

Name of the isotope:Germanium-83; Ge-83Symbol:⁸³Ge or 8332GeMass number A:83 (= number of nucleons)Atomic number Z:32 (= number of protons)Neutrons N:51Nucleon pairing (Z - N):even - oddNuclear ratio (N/Z ratio):1.59375 (= neutron-proton ratio)Neutron excess (N-Z):19Isotopic mass:82.9345391(26) u (atomic weight of Germanium-83)Nuclide mass:82.9169851 u (calculated nuclear mass without electrons)Mass excess:-60.97644 MeVMass defect:0.75777264000001 u (per nucleus)Nuclear binding energy:705.86066752 MeV (per nucleus)
8.50434539 MeV (average binding energy per nucleon)Separation energy:S_N = 3.633(3) MeV (first neutron)
S_P = 15.335(3) MeV (first proton)Half-life:1.85(6) sDecay constant λ:0.37467415165402 s^-1Specific activity α:2.720628226646 × 10⁺²¹ Bq g^-1
73530492612.078 Ci g^-1Spin and parity:
(nuclear angular momentum)(5/2)+Year of discovery:1972

Radioactive Decay

Half-life T_½ = 1.85(6) s.

Decay mode	Daughter	Probability	Decay energy	γ energy (intensity)
β^-	⁸³As	100 %	8.693(4) MeV
β^-, n	⁸²As	?	1.058(4) MeV

Isotones and Isobars

The following table shows the atomic nuclei that are isotonic (same neutron number N = 51) and isobaric (same nucleon number A = 83) with Germanium-83. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.

Z	Isotone N = 51	Isobar A = 83
28	⁷⁹Ni
29	⁸⁰Cu
30	⁸¹Zn	⁸³Zn
31	⁸²Ga	⁸³Ga
32	⁸³Ge	⁸³Ge
33	⁸⁴As	⁸³As
34	⁸⁵Se	⁸³Se
35	⁸⁶Br	⁸³Br
36	⁸⁷Kr	⁸³Kr
37	⁸⁸Rb	⁸³Rb
38	⁸⁹Sr	⁸³Sr
39	⁹⁰Y	⁸³Y
40	⁹¹Zr	⁸³Zr
41	⁹²Nb	⁸³Nb
42	⁹³Mo	⁸³Mo
43	⁹⁴Tc
44	⁹⁵Ru
45	⁹⁶Rh
46	⁹⁷Pd
47	⁹⁸Ag
48	⁹⁹Cd
49	¹⁰⁰In
50	¹⁰¹Sn