The co-ordination number of Ca^ 2+ ion in fluorite crystal is:

JEE Main Chemistry question

Not in JEE Main or NEET syllabus

The co-ordination number of ion in fluorite crystal is:

(A)2
(B)8Correct
(C)6
(D)4

Answer: (B)

Solution

In the fluorite () structure, ions form an fcc lattice while ions occupy all the tetrahedral voids; by the stoichiometry and geometry of this structure, each is surrounded by

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Question ID VK-141771