Question

A compound is formed by two elements X and Y. Atoms of element Y (as anions) make ccp and
those of the elements X (as cations) occupy 1/3 of the tetrahedral voids. What is the formula o
the compound?
​

Answer 1

Answer:

Let us cosider the number of  atoms Y in ccp = N

Number of octahedral voids = N × 1 = N

Number of atoms of X = N

Now, Ratio of X : Y = N : N = 1 : 1

Hence, formula of the compound = XY

Explanation: