Question

The tetrahedral voids formed by ccp arrangement of $C{l}^{-}$ ions in rock salt structure are

• A. All occupied by $N{a}^{+}$ ions
• B. 50% occupied by $N{a}^{+}$ ions
• C. Occupied by either $N{a}^{+}$ nor $C{l}^{-}$ ions
• D. Vacant

Answer 1

Answer: (D)

Tetrahedral voids are vacant. All the octahedral voids are occupied by $N{a}^{+}$ ions.