In a solid AB , A atoms are in ccp arrangement and B atoms occupy all the octahedral sites. If two atoms from the opposite faces are removed, then the resultant stoichiometry of the compound is A x B y . The value of x is [nearest integer]

Step-by-step solution

A   forms ccp structure that means number of A atoms per unit cell → 4 B atoms per unit cell → 4 (Octahedral voids), as number of octahedral voids will be equal to number of atoms per unit cell. A removed = 2 × 1 2 = 1 A left = 4 - 1 = 3 Formula becomes A 3 B 4 x = 3 .