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AP EAMCET · Chemistry · Solid State

Identify the incorrect statement regarding crystals having Frenkel defect.

  1. A Frenkel defects are observed where the difference in sizes of cations and anions is large.
  2. B The density of crystals having Frenkel defect is less than that of a pure perfect crystal.
  3. C An ionic crystal having Frenkel defect may also contain Schottky defect.
  4. D Alkali halides do not usually have Frenkel defect.
Verified Solution

Answer & Solution

Correct Answer

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

Step-by-step Solution

Detailed explanation

In Frenkel defect density remain constant. It is a defect of a cation or an anion is dislocated from its normal site to interstitial site. Interstitial site is the place between the lattice sites. This defect is observed in solids when the difference in ionic radius of two ions…