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Question

An AB2 type structure is found in


A

NaCl

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B

Al2O3

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C

CaF2

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D

N2O

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Solution

The correct option is C

CaF2


AB2 type structure (fluorite type)
CaF2Ca2+ forms ccp arrangement.
It covers corners and face centres.
F ions are located such that 4Ca2+ ions are around it.
It can be said that they occupy tetrahedral sites.


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