A solid is made of two elements X and Z. The atoms Z are in CCP arrangement while the atom X occupy two-third of the tetrahedral sites. What is the formula of the compound?
Tetrahedral sites are double compared to octahedral sites; and X is present in two-third of them
a) So, ratio of X and Z equals 2×(23):1=4:3
⇒ formula of the compound = X4Z3