If bromine atom is available in the form of, say, two isotopes ₃₅Br⁷⁹ (49.7%) and ₃₅Br⁸¹ (50.3%), calculate the average atomic mass of Bromine atom.

Question

Accepted Answer

Answer :

The atomic masses of two isotopic atoms are ₃₅Br⁷⁹ is 49.7% and ₃₅Br⁸¹ is 50.3%.

Thus, total mass = {(79 x 49.7) / 100} + {(81 x 50.3) / 100} = 39.263 + 40.743 = 80.006 u

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