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Which of the following statements for cr...

Which of the following statements for crystals having Frenkel defect is /are not correct?

A

Frenkel defects and observed where the difference in sizes of cations and anions is large

B

The density of crystals having Frenkel defect islesser than that of a pure perfect crystal

C

In an ionic crystal having Frenkel defect may also contain Schottky defect.

D

Pure alkali halides do not have Frenkel defect

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The correct Answer is:
B
Density of crystals having Frenkel defect, is identical to that of pure crystal.
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