Which one below is not true for Frenkel and Schottky defects in ionic solids? * Schottky defect Frenkel defect When Frenkel defect occurs, there is no change in charge because the cation maintains the same positive charge as an interstitial. When Schottky defect occurs, the charge neutrality of the crystal is not maintained because it involves both anions and cations. Schottky defect involves a cation vacancy and an anion vacancy pair. Frenkel defect involves a cation-vacancy and a cation-interstitial pair.

Physical Chemistry
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Chapter21: The Solid State: Crystals
Section: Chapter Questions
Problem 21.47E
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Which one below is not true for Frenkel and Schottky defects in ionic solids? * A
Schottky defect
Frenkel defect
When Frenkel defect occurs, there is no change in charge because the cation maintains
the same positive charge as an interstitial.
When Schottky defect occurs, the charge neutrality of the crystal is not maintained
because it involves both anions and cations.
Schottky defect involves a cation vacancy and an anion vacancy pair.
Frenkel defect involves a cation-vacancy and a cation-interstitial pair.
Transcribed Image Text:Which one below is not true for Frenkel and Schottky defects in ionic solids? * A Schottky defect Frenkel defect When Frenkel defect occurs, there is no change in charge because the cation maintains the same positive charge as an interstitial. When Schottky defect occurs, the charge neutrality of the crystal is not maintained because it involves both anions and cations. Schottky defect involves a cation vacancy and an anion vacancy pair. Frenkel defect involves a cation-vacancy and a cation-interstitial pair.
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