20. The isotopes of chlorine with mass numbers 35 and 37 exist in the ratio of 1)1:1 2) 2:1 3) 3:1 4) 3:2

Chlorine is a mixture of two isotopes with atomic masses 35u and 37u which are present in the ratio of 3:1. Find out the average atomic mass.

Chlorine occurs in nature in two isotopes forms of masses 35 u and 37 u in the ratio of 3:1 respectively. What is the average atomic mass of the Chlorine atom ?

An element forms two different sulphates in which its weight % is 28 and 37. What is the ratio of oxidation numbers of the element in these sulphates. 1:2 1:3 (2) (3) 2:1 3:2

Divide 35 sweets Sudha and Tanvy in the ratio (1)/(2) : (1)/(3)