Question

For every one $37Cl$isotope there are three $35Cl$ isotopes in a sample of chlorine. What will be the average atomic mass of chlorine?

• A. 35
• B. 37
• C. $35.5$
• D. $35.6$

Answer 1

Answer: (C)

$35.5$

Answer 2

: Atomic mass of chlorine=$\frac{3 \times 35 + 37 \times 1}{4} = 35.5$