Question

Why is the relative atomic mass of chlorine not a whole number

Answer 1

Answer:

35.5

Explanation:

Isotopes of Chlorine=35 Cl and 37 Cl

Their ratio=3:1

Relative atomic mass=(3×35+1×37)/4=(105+37)/4=142/4=35.5.

Hence the relative mass of chlorine is not a whole number instead it is a fraction due to its different mass number.