Bromine-81

Main isotopes of bromine

iso NA half-life DM DE (MeV) DP 79Br 51% is stable with 44 neutrons 81Br 49% is stable with 46 neutrons
Standard atomic weight (Ar)	[79.901, 79.907] Conventional: 79.904

Bromine (₃₅Br) has two stable isotopes, ⁷⁹Br and ⁸¹Br, and 30 known radioisotopes, the most stable of which is ⁷⁷Br, with a half-life of 57.036 hours. Bromine and chlorine are the only halogens with more than one stable isotope.

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