Answer:
Option B
Explanation:
Contribution of atom from the edge centre is 1/4.Therefore, number of
$M=\frac{1}{4} \times 4$ (from edge centre )+1(from body centre)=2
Number of X= $\frac{1}{8} \times 8$ (from corners)+$\frac{1}{2} \times 6$( from the centre)=4
$\Rightarrow$ Empirical formula= $M_{2}X_{4}=MX_{2}$
