Multiple choice

The total number of tetrahedral voids per unit cell in NaCl is

  1. 4

  2. 8

  3. Twice the number of octahedral voids

  4. Four times the number of octahedral voids

  5. None of these

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

NaCl has FCC arrangement of Cl ions. Hence, the number of Cl ions in packaging per unit cell= 4 Tetrahedral is double of octahedral voids. Thus, 2n= 8.