Nuclides with atomic number of 35 but with different mass numbers
Isotopes of bromine (35Br)
Main isotopes[1]
Decay
abundance
half-life (t1/2)
mode
product
75Br
synth
96.7 min
β+
75Se
76Br
synth
16.2 h
β+
76Se
77Br
synth
57.04 h
β+
77Se
79Br
50.6%
stable
80mBr
synth
4.4205 h
IT
80Br
81Br
49.4%
stable
82Br
synth
35.282 h
β−
82Kr
Standard atomic weight Ar°(Br)
[79.901, 79.907][2]
79.904±0.003 (abridged)[3]
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Bromine (35Br) has two stable isotopes, 79Br and 81Br, and 35 known radioisotopes, the most stable of which is 77Br, with a half-life of 57.036 hours.
Like the radioactive isotopes of iodine, radioisotopes of bromine, collectively radiobromine, can be used to label biomolecules for nuclear medicine; for example, the positron emitters 75Br and 76Br can be used for positron emission tomography.[4][5] Radiobromine has the advantage that organobromides are more stable than analogous organoiodides, and that it is not uptaken by the thyroid like iodine.[6]
^Kondev, F. G.; Wang, M.; Huang, W. J.; Naimi, S.; Audi, G. (2021). "The NUBASE2020 evaluation of nuclear properties" (PDF). Chinese Physics C. 45 (3): 030001. doi:10.1088/1674-1137/abddae.
^"Standard Atomic Weights: Bromine". CIAAW. 2011.
^Prohaska, Thomas; Irrgeher, Johanna; Benefield, Jacqueline; Böhlke, John K.; Chesson, Lesley A.; Coplen, Tyler B.; Ding, Tiping; Dunn, Philip J. H.; Gröning, Manfred; Holden, Norman E.; Meijer, Harro A. J. (2022-05-04). "Standard atomic weights of the elements 2021 (IUPAC Technical Report)". Pure and Applied Chemistry. doi:10.1515/pac-2019-0603. ISSN 1365-3075.
^Coenen, Heinz H.; Ermert, Johannes (January 2021). "Expanding PET-applications in life sciences with positron-emitters beyond fluorine-18". Nuclear Medicine and Biology. 92: 241–269. doi:10.1016/j.nucmedbio.2020.07.003.
^Welch, Michael J.; Mcelvany, Karen D. (1 October 1983). "Radionuclides of Bromine for Use in Biomedical Studies". ract. 34 (1–2): 41–46. doi:10.1524/ract.1983.34.12.41.
^Lambert, F.; Slegers, G.; Hermanne, α.; Mertens, J. (1 June 1994). "Production and Purification of 77 Br Suitable for Labeling Monoclonal Antibodies Used in Tumor Imaging". ract. 65 (4): 223–226. doi:10.1524/ract.1994.65.4.223.
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