The element X and Y form a compound which contains the element in ratio of 1: 3 by mass. If their vapor density are in ratio of 2: 3 find empirical formula of compound.

Question

The element $X$ and $Y$ form a compound which contains the element in ratio of $1: 3$ by mass. If their vapour density are in ratio of $2: 3$ find empirical formula of compound.

(A) $X Y$

(B) $X Y_{2}$

(C) $X Y_{3}$

(D) $X_{2} Y$

Answer 1

The empirical formula of compound will be XY₂. So, The correct option of this question is (B).