A solid is made of two elements X & Z .the atoms Z are in CCP arrangement while atom X occupy all tetrahedral sites . what is the formula of the compound?
CCP arrangement has 4 atoms
Atom Z are in CCP arrangement so total atom of Z = 4
Tetrahedral sites are double of total atom present in the unit cell
So tetrahedral sites present = 2*4 = 8
X occupy tetrahedral sites so total number of X present = 8
Formula of compound will be X8Z4 = X2Z
Answer : X2Z