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Problem: What are the masses of the four different BrCl molecules? Express the masses in atomic mass units using six significant figures, in decreasing numeric order (highest to lowest), separated by commas.The two naturally occurring isotopes of bromine are 81Br (80.916 amu, 49.31%) and79Br (78.918 amu, 50.69%). The two naturally occurring isotopes of chlorine are 37Cl (36.966 amu, 24.23%) and35Cl (34.969 amu, 75.77%).Bromine and chlorine combine to form bromine monochloride, BrCl.

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Problem Details

What are the masses of the four different BrCl molecules? 

Express the masses in atomic mass units using six significant figures, in decreasing numeric order (highest to lowest), separated by commas.


The two naturally occurring isotopes of bromine are 

  • 81Br (80.916 amu, 49.31%) and
  • 79Br (78.918 amu, 50.69%). 

The two naturally occurring isotopes of chlorine are 

  • 37Cl (36.966 amu, 24.23%) and
  • 35Cl (34.969 amu, 75.77%).

Bromine and chlorine combine to form bromine monochloride, BrCl.

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