In an ionic solid, B^(x-) ions constitute a ccp lattice, if A^(y+) ions occupy 25%, of the tetrahedral voids, the possible ions in the solid are
Each unit cell of NaCl consists of 4 chloride ions and
A binary solid A^(+)B^(-) has a structure with B^(-) ions constituting the lattice and A^(+) ions occupying 25% tetrahedral holes. Formula of the solid is