In a compound ,atoms of element Y from ccp lattice and those of element X occupy 2/3rd tetrahedral voids.The formula of the compound will be:

In a compound atoms element Y form ccp lattice and those of element X occupy 2/3 rd of tetrahedral voids. The formula of the compound will be

In a compound, atoms of element Y form ccp lattice and those of X occupy 2//3 rd of tetrahedral voids. The formula of the compound will be :

In a compound atoms of element Y form cup lattice and those of element X occupy 2//3^(rd) of lettabedral voids .The foemula of the compound will be

In a compound atoms of element 'Y' form C.C.P. lattice and those of element 'X' occupy 2/3rd of tetrahedral voids. The formula of the compound will be