Germanium-86

Properties and data of the isotope ⁸⁶Ge.

Contents

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

General data

Name of the isotope:Germanium-86; Ge-86Symbol:⁸⁶Ge or 8632GeMass number A:86 (= number of nucleons)Atomic number Z:32 (= number of protons)Neutrons N:54Nucleon pairing (Z - N):even - evenNuclear ratio (N/Z ratio):1.6875 (= neutron-proton ratio)Neutron excess (N-Z):22Isotopic mass:85.94697(47) u (atomic weight of Germanium-86)Nuclide mass:85.929416 u (calculated nuclear mass without electrons)Mass excess:-49.39713 MeVMass defect:0.771336488 u (per nucleus)Nuclear binding energy:718.49531055 MeV (per nucleus)
8.35459663 MeV (average binding energy per nucleon)Separation energy:S_N = 4.35(44) MeV (first neutron)
S_P = 16.84(53) MeV (first proton)Half-life:226(21) msDecay constant λ:3.0670229228316 s^-1Specific activity α:2.149004642681 × 10⁺²² Bq g^-1
580812065589.54 Ci g^-1Spin and parity:
(nuclear angular momentum)0+Year of discovery:1994

Radioactive Decay

Half-life T_½ = 226(21) ms respectively 2.26 × 10^-1 seconds s.

Decay mode	Daughter	Probability	Decay energy	γ energy (intensity)
β^-	⁸⁶As	55 %	9.56(44) MeV
β^-, n	⁸⁵As	45(15) %	5.72(44) MeV

Isotones and Isobars

The following table shows the atomic nuclei that are isotonic (same neutron number N = 54) and isobaric (same nucleon number A = 86) with Germanium-86. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.

Z	Isotone N = 54	Isobar A = 86
30	⁸⁴Zn
31	⁸⁵Ga	⁸⁶Ga
32	⁸⁶Ge	⁸⁶Ge
33	⁸⁷As	⁸⁶As
34	⁸⁸Se	⁸⁶Se
35	⁸⁹Br	⁸⁶Br
36	⁹⁰Kr	⁸⁶Kr
37	⁹¹Rb	⁸⁶Rb
38	⁹²Sr	⁸⁶Sr
39	⁹³Y	⁸⁶Y
40	⁹⁴Zr	⁸⁶Zr
41	⁹⁵Nb	⁸⁶Nb
42	⁹⁶Mo	⁸⁶Mo
43	⁹⁷Tc	⁸⁶Tc
44	⁹⁸Ru	⁸⁶Ru
45	⁹⁹Rh
46	¹⁰⁰Pd
47	¹⁰¹Ag
48	¹⁰²Cd
49	¹⁰³In
50	¹⁰⁴Sn
51	¹⁰⁵Sb
52	¹⁰⁶Te