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average atomic mass = 49.7/100*79 + 50.3/100*81
therefore
average atomic mass of bromine,
= 79*49.7/100 + 81*50.3/100
= 39.263 + 40.743
= 80.006 u
i hope it helps.................
therefore
average atomic mass of bromine,
= 79*49.7/100 + 81*50.3/100
= 39.263 + 40.743
= 80.006 u
i hope it helps.................
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