A compound formed by elements X and Y crystallises in a cubic structure in which the X atoms are at the corners of a cube and the Y atoms are at the face-centres. The formula of the compound is

A compound formed by elements X and Y crystallises in a cubic structur

1.	A compound formed by elements X and Y crystallises in a cubic structure in which the X atoms are at the corners of a cube and the Y atoms are at the face-centres. The formula of the compound is
Answer» `XY_(2)` `XY_(3)` `X_(3)Y` XY Solution :No. of A STOMS present per UNIT cell =`8times1/8=1` No. of B atoms present per unit cell =`6times1/2=3` ltbegt `therefore` Correct composition of `A_(X)B_(y)"is"AB_(3)`