A compound is formed by two elements X and Y. Atoms of the element Y (as anions) make ccp and those of the element X (as cation) occupy all the octahedral voids. What is the formula of the compound ?

A compound is formed by two elements X and Y. Atoms of the element Y (

1.	A compound is formed by two elements X and Y. Atoms of the element Y (as anions) make ccp and those of the element X (as cation) occupy all the octahedral voids. What is the formula of the compound ?
Answer» Solution :Suppose number of ATOMS Y in ccp=N As number of octahedral VOIDS = No. of atoms in ccp `therefore` No. of octahedral voids=n As all the octahedral voids are occupied by atoms X, therefore , number of atoms X=n `therefore` Ratio of X :Y =n:n=1:1 Hence the formula of the compound is XY