JEE Main Chemistry question

Not in JEE Main or NEET syllabus

In an antifluorite structure, cations occupy [BITSAT 2005]

(A)Octahedral voids
(B)Centre of cube
(C)Tetrahedral voidsCorrect
(D)Corners of cube

Answer: (C)

Solution

The antifluorite structure (e.g. ) is the inverse of the fluorite structure: the anions form a ccp lattice while the cations occupy all of the tetrahedral voids (twice as many cations as anions,

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Question ID VK-141567