What is the average atomic mass of bromine? One isotope of bromine has an atomic mass of and a relative abundance of . The other major isotope of bromine has an atomic mass of and a relative abundance of ?
Step 1. Average atomic mass
Here, represents the relative abundance of the isotope and is the atomic mass of the isotope.
Step 2. Calculation of average atomic mass of bromine
From the given data average atomic mass of bromine can be calculated as:
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Hence, the average atomic mass of Bromine is .