Identify the incorrect statement regarding cr | vedclass

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(B) $Frenkel$ defect occurs when an ion (usually a cation) is dislocated from its normal lattice site to an interstitial site. Because the ions remain

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The density of crystals having $Frenkel$ defect is less than that of a pure perfect crystal.

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(B) $Frenkel$ defect occurs when an ion (usually a cation) is dislocated from its normal lattice site to an interstitial site. Because the ions remain within the crystal lattice,the total mass and volume of the crystal do not change. Therefore,the density of the crystal remains constant,not less than that of a pure perfect crystal. This defect is typically observed in ionic solids where there is a large difference in the size of the ions. $Schottky$ and $Frenkel$ defects can coexist in the same crystal. Alkali halides (except $AgBr$) generally do not show $Frenkel$ defect due to the similar sizes of their ions.

Identify the incorrect statement regarding crystals having $Frenkel$ defect.

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