Question

In an ionic compound the anions y form a ccp structure and cation x occupy half of the octahedral voids. calculate the molecular formula of compound.​

Answer 1

Answer:

Explanation:

In any unit cell it is important to note that the effective number of atoms or ions forming the lattice is equal to the number of octahedral voids in the lattice structure. Basically Zeff = no. of octahedral voids.

So a ccp structure consists of 4 anions. Zeff = 4 and the half of the octahedral voids are occupied by the cations. So 2 cations.

Therefore the molecular formula of the compound is X2Y4 or XY2