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Question

If bromine atom is available in the form of, say, two isotopes 35๐ต๐‘Ÿ 79 (49.7%) and ๐ต๐‘Ÿ 35 81 (50.3%), calculate the average atomic mass of bromine atom.

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Answer

The average atomic mass of bromine

= (79 x 49.7)+ (81 x 50.3)/100

= (3926.3 + 4074.3)/100

= 8000.6/100

= 80 u

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