A cubic solid is made up of two elements A and B.Atoms of element B are present at the corners of the cube and atoms A at the body centre. predict the formula of the compound.

As atoms B are present at the 8 corners of the cube,∴Number of B atoms per unit cell =8×18=1As atom A arc present at the body centre,∴ Number of A atoms per unit cell = 1∴ Ratio of atoms A : B = 1 : 1Thus, the formula of the compound is AB.