Question

The incorrect statement about the imperfections in solids is ______.

Options

• Schottky defect decreases the density of the substance.

• Interstitial defect increases the density of the substance.

• Frenkel defect does not alter the density of the substance. 

• Vacancy defect increases the density of the substance.

Answer 1

The incorrect statement about the imperfections in solids is vacancy defect increases the density of the substance.

Explanation:

The Schottky defect is a type of vacancy defect in ionic compounds. It decreases the density of substance. When constituent particles occupy the interstitial location, interstitial defects arise. This increases the density of substance. A Frenkel defect occurs when constituent particles occupy the interstitial site. It creates a vacancy defect at the original and an interstitial defect at the new location. It does not change the density of crystal. Due to vacancy, the defect density of the substance will decrease.