Schottky defect in solids is due to:

a pair of cation and anion vacancies

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occupation of interstitial site by a pair of cation and anion

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occupation of interstitial site by a cation

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occupation of interstitial site by an anion

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Solution

The correct option is D a pair of cation and anion vacancies
Schottky defect in solids is due to a pair of cation and anion vacancies. Equal number of cations and anions are missing which ensures electrical neutrality. Due to this defect, the density of crystal decreases.
Frenkel defect in solids is due to occupation of interstitial site by a cation or an anion. This defect does not affects the density of the crystal.

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Similar questions

Schottky defect is observed in crystals when .....................

(a) some cations move from their lattice site to interstitial sites

(b) equal number of cation and anions are missing from the lattice

(d) some impurity is present in the lattice

Cations are present in the interstitial sites in ...........

(a) Frenkel defect (b) Schottky defect

How Metal excess defect is caused by the presence of extra cations in the interstitial sites?

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