In a compound , the oxide ions are arranged in CCP arrangement and cations X are present in octahedral voids. Cations Y are equally distributed between octahedral and tetrahedral voids. The fraction o

Question

In a compound $	ext{XY}_2	ext{O}_4$, the oxide ions are arranged in CCP arrangement and cations X are present in octahedral voids. Cations Y are equally distributed between octahedral and tetrahedral voids. The fraction of the octahedral voids occupied is

Prashant Kotian · Accepted Answer

Correct answer: A. In a CCP lattice of 4 oxide ions, there are 4 octahedral voids. The formula implies 1 X and 2 Y ions per 4 O ions. X occupies 1 octahedral void. Y is distributed equally, so 1 Y is in an octahedral void. Total octahedral voids occupied = 1 (from X) + 1 (from Y) = 2. Fraction occupied = . Therefore, correct answer is A.

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