Bromine-86

Properties and data of the isotope ⁸⁶Br.

Contents

General Data

Radioactive Decay

Parent Nuclides

Isotones und Isobares

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

General data

Name of the isotope:Bromine-86; Br-86Symbol:⁸⁶Br or 8635BrMass number A:86 (= number of nucleons)Atomic number Z:35 (= number of protons)Neutrons N:51Nucleon pairing (Z - N):odd - oddNuclear ratio (N/Z ratio):1.4571428571429 (= neutron-proton ratio)Neutron excess (N-Z):16Isotopic mass:85.918805(3) u (atomic weight of Bromine-86)Nuclide mass:85.8996054 u (calculated nuclear mass without electrons)Mass excess:-75.63266 MeVMass defect:0.796981836 u (per nucleus)Nuclear binding energy:742.38379834 MeV (per nucleus)
8.63236975 MeV (average binding energy per nucleon)Separation energy:S_N = 5.128(4) MeV (first neutron)
S_P = 10.508(5) MeV (first proton)Half-life:55.1(4) sDecay constant λ:0.012579803639926 s^-1Specific activity α:8.912629354115 × 10⁺¹⁹ Bq g^-1
2408818744.3555 Ci g^-1Spin and parity:
(nuclear angular momentum)(1-)Year of discovery:1962

Radioactive Decay

Half-life T_½ = 55.1(4) s respectively 5.51 × 10¹ seconds s.

Decay mode	Daughter	Probability	Decay energy	γ energy (intensity)
β^-	⁸⁶Kr	100 %	7.633(3) MeV

Parent Nuclides

Direct parent isotopes are: ⁸⁶Se, ⁸⁷Se.

Isotones and Isobars

The following table shows the atomic nuclei that are isotonic (same neutron number N = 51) and isobaric (same nucleon number A = 86) with Bromine-86. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.

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