Germanium-88

Properties and data of the isotope ⁸⁸Ge.

Contents

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

General data

Name of the isotope:Germanium-88; Ge-88Symbol:⁸⁸Ge or 8832GeMass number A:88 (= number of nucleons)Atomic number Z:32 (= number of protons)Neutrons N:56Nucleon pairing (Z - N):even - evenNuclear ratio (N/Z ratio):1.75 (= neutron-proton ratio)Neutron excess (N-Z):24Isotopic mass:87.95691(43) u (atomic weight of Germanium-88)Nuclide mass:87.939356 u (calculated nuclear mass without electrons)Mass excess:-40.13808 MeVMass defect:0.77872632 u (per nucleus)Nuclear binding energy:725.37889472 MeV (per nucleus)
8.24294199 MeV (average binding energy per nucleon)Separation energy:S_N = 4.13(50) MeV (first neutron)
S_P = 18.18(64) MeV (first proton)Half-life:300 nsDecay constant λ:2310490.6018665 s^-1Specific activity α:1.58192228775 × 10⁺²⁸ Bq g^-1
4.275465642578 × 10⁺¹⁷ Ci g^-1Spin and parity:
(nuclear angular momentum)0+Year of discovery:1997

Radioactive Decay

Half-life T_½ = 300 ns respectively 3.0 × 10^-7 seconds s.

Decay mode	Daughter	Probability	Decay energy	γ energy (intensity)
β^-	⁸⁸As	?	10.58(44) MeV
β^-, n	⁸⁷As	?	7.41(40) MeV

Isotones and Isobars

The following table shows the atomic nuclei that are isotonic (same neutron number N = 56) and isobaric (same nucleon number A = 88) with Germanium-88. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.

Z	Isotone N = 56	Isobar A = 88
31	⁸⁷Ga
32	⁸⁸Ge	⁸⁸Ge
33	⁸⁹As	⁸⁸As
34	⁹⁰Se	⁸⁸Se
35	⁹¹Br	⁸⁸Br
36	⁹²Kr	⁸⁸Kr
37	⁹³Rb	⁸⁸Rb
38	⁹⁴Sr	⁸⁸Sr
39	⁹⁵Y	⁸⁸Y
40	⁹⁶Zr	⁸⁸Zr
41	⁹⁷Nb	⁸⁸Nb
42	⁹⁸Mo	⁸⁸Mo
43	⁹⁹Tc	⁸⁸Tc
44	¹⁰⁰Ru	⁸⁸Ru
45	¹⁰¹Rh
46	¹⁰²Pd
47	¹⁰³Ag
48	¹⁰⁴Cd
49	¹⁰⁵In
50	¹⁰⁶Sn
51	¹⁰⁷Sb
52	¹⁰⁸Te
53	¹⁰⁹I
54	¹¹⁰Xe