Bromine-76

Properties and data of the isotope ⁷⁶Br.

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-76; Br-76Symbol:⁷⁶Br or 7635BrMass number A:76 (= number of nucleons)Atomic number Z:35 (= number of protons)Neutrons N:41Nucleon pairing (Z - N):odd - oddNuclear ratio (N/Z ratio):1.1714285714286 (= neutron-proton ratio)Neutron excess (N-Z):6Isotopic mass:75.924542(10) u (atomic weight of Bromine-76)Nuclide mass:75.9053424 u (calculated nuclear mass without electrons)Mass excess:-70.28867 MeVMass defect:0.704595676 u (per nucleus)Nuclear binding energy:656.32664462 MeV (per nucleus)
8.6358769 MeV (average binding energy per nucleon)Separation energy:S_N = 9.253(10) MeV (first neutron)
S_P = 5.409(9) MeV (first proton)Half-life:16.2(2) hDecay constant λ:1.188523972153 × 10^-5 s^-1Specific activity α:9.543278367626 × 10⁺¹⁶ Bq g^-1
2579264.4236829 Ci g^-1Spin and parity:
(nuclear angular momentum)1-Magnetic dipole moment:μ(μ_N) = 0.5477(1)Quadrupole moment Q:0.270(3) barn (100 fm²)Nuclear g-factor:g_l = 0.5477Year of discovery:1952

Radioactive Decay

Half-life T_½ = 16.2(2) h (hours) respectively 5.8320 × 10⁴ seconds s.

Decay mode	Daughter	Probability	Decay energy	γ energy (intensity)
EC/β⁺	⁷⁶Se	100 %	4.963(9) MeV

Parent Nuclides

Direct parent isotope is: ⁷⁶Kr.

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
^76mBr	102.58(3) keV	1.31(2) s	(4)+

Isotones and Isobars

The following table shows the atomic nuclei that are isotonic (same neutron number N = 41) and isobaric (same nucleon number A = 76) with Bromine-76. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.

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