Chemistry - Solid State Question with Solution | TestHub

As the number of tetrahedral voids formed is equal to twice the number of atoms of element B and only 2/3 of these are occupied by A so the ratio of A : B is$2\times \frac{2}{3}:1$or 4 : 3.
Hence, the correct formula is${\mathrm{A}}_4{\mathrm{B}}_3$.