Chlorine naturally exists as two isotopes ... 75 atoms have a mass number of 35, and 25 atoms have a mass number of 37. To calculate the relative atomic mass, A r, of chlorine: \(A_{r} ...

Chlorine naturally exists as two isotopes ... 75 atoms have a mass number of 35, and 25 atoms have a mass number of 37. To calculate the relative atomic mass, A r, of chlorine: \(\textit ...