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Question

Which one of the following crystals does not exhibit Frenkel defect

A
AgBr
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B
AgCl
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C
KBr
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D
ZnS
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Solution

The correct option is C KBr

KBr exhibits Schottky defect and not Frenkel defect

AgBr shows both Schottky as well as Frenkel defect

Frenkel defect is shown by compounds with large difference in size of cations and anions, low coordination number and low ionic nature.


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