Questions

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

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By Expert Faculty of Sri Chaitanya

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

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.