Which of the following defects decrase the density ?

(a) Interstitial defect (b) Vacancy defect

(c) Frenkel defect(d) Schottky defect

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Solution

Answers: (b), and (d)

Vacancy and Schottky defects which lead to decrease the density both are the types of a stoichiometric defect. In the case of Frenkel defect and interstitial defect, there is no change in the density of the substance.

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