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Isotopes of bromine

Most stable 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
Most stable 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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