Questions

What type of crystal defect is indicated in the diagram below?
$\begin{array}{l} {Na}^{+} {Cl}^{-} {Na}^{+} {Cl}^{-} {Na}^{+} {Cl}^{-} \\ {Cl}^{-} ◻ {Cl}^{-} {Na}^{+} ◻ {Na}^{+} \\ {Na}^{+} {Cl}^{-} ◻ {Cl}^{-} {Na}^{+} {Cl}^{-} \\ {Cl}^{-} {Na}^{+} {Cl}^{-} {Na}^{+} ◻ {Na}^{+} \end{array}$

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Frenkel defect

Schottky defect

Interstitial defect

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detailed solution

Correct option is B

In the diagram, the Schottky defect is represented by an equal number of missing sodium cations and chloride anion.
A cation or anion departs its normal site and assumes an interstitial place in a Frenkel defect.

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What type of crystal defect is indicated in the diagram below?Na+ Cl− Na+ Cl− Na+ Cl−Cl− ◻ Cl− Na+ ◻ Na+Na+ Cl− ◻ Cl− Na+ Cl−Cl− Na+ Cl− Na+ ◻ Na+