Questions

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

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

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

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

Usually alkali halides do not have Frenkel defect

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detailed solution

Correct option is B

ln frenkal defect ions is shifted in its interstitial site but density remains unchange

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Similar Questions

Match the defects given in Column I with the statements given in Column II.

	Column I		Column II
A.	Simple vacancy defect	1.	Shown by non-ionic solids and increases density of the solid.
B.	Simple interstitial defect	2.	Shown by ionic solids and decreases density of the solid.
C.	Frenkel defect	3.	Shown by non-ionic solids and density of the solid decreases.
D.	Schottky defect	4.	Shown by ionic solids and density of the solid remains the same.