A compound formed by elements A and B crystallises in cubic structure in which A atoms are at the corners of the cube while B atoms are at the centre of cube. Formula of the compound is

Options

A. `A_2B_3`
B. `AB_2`
C. `AB_3`
D. AB

Answer

D

Explanation

Number of atoms of element A per unit cell `= 8 " (at corners) " 1/8 = 1`
No. of atoms of B in one unit cell = 1 (present in the body centre of the cube).
`:.` The number of atoms of elements A and B per unit cell is one each. Hence, the formula is AB.