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JEE Main202228 Jun 2022Morning ShiftChemistrySolid StateActual

The incorrect statement about the imperfections in solids is

Options

  1. ASchottky defect decreases the density of the substance.
  2. BFrenkel defect does not alter the density of the substance.
  3. CInterstitial defect increases the density of the substance.
  4. DVacancy defect increases the density of the substance.

Correct answer

D. Vacancy defect increases the density of the substance.

Step-by-step solution

Frenkel Defect: This defect is shown by ionic solids. The smaller ion (usually cation) is dislocated from its normal site to an interstitial site. It creates a vacancy defect at its original site and an interstitial defect at its new location. Frenkel defect is also called dislocation defect. It does not change the density of the solid. In all other defects there is a change in the density. In Schottky defect equal number of cation and anion are missing from their position so, it decreases the density of the substa

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