Multiple choice

In cubic closed pack structure of mixed oxides, the lattice is made up of oxide ions, one eighth of the octahedral voids are occupied by divalent ions (A2+), while one half of the octahedral voids are occupied by trivalent ions (B3+). The formula for the oxide is

  1. A3B2O4

  2. A2B2O4

  3. AB2O4

  4. None of these

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

  Let the number of oxides be = x So number of octahedral  voids = x And number of tetrahedral voids = 2x Number of A2+ ion = 2x/8 = x/4 Number of B3+ ions = x/2 A2+ : B3+ : O2- x/4: x/2: x 1:2:4 Hence the formula for the oxide is AB2O4