Question

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

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

Answer 1

Answer: (D)

Vacant

Answer 2

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