12th Class Chemistry The Solid State / ठोस प्रावस्था Question Bank MCQs - The Solid State

What type of crystal defect is indicated in the diagram below?

\[{{A}^{+}}\] \[{{B}^{-}}\] \[{{A}^{+}}\] \[\square \] \[{{A}^{+}}\] \[{{B}^{-}}\]

\[{{B}^{-}}\] \[\square \] \[{{B}^{-}}\] \[{{A}^{+}}\] \[\square \] \[{{A}^{+}}\]

\[{{A}^{+}}\] \[{{B}^{-}}\] \[\square \] \[{{B}^{-}}\] \[{{A}^{+}}\] \[{{B}^{-}}\]

A) Schottky defect

B) Frenkel defect

C) Interstitial defect

D) Both Frenkel and Schottky defect

Correct Answer: A

Solution :

[a] In the given diagram, equal number of cations and anions are missing from the lattice. Hence, it is Schottky defect.