Which among the following statements is true about Schottky defect ?

Question

Which among the following statements is true about Schottky defect ? (A) In this defect cation and anion are lacking in stoichiometric proportion (B) Formation of metal alloy is example of this defect (C) In this cation or anion moves from regular site to place between lattice site (D) In this regular cation is replaced by different cation

Tardigrade Admin · Accepted Answer

In Schottky defect, cation and anion are lacking in stoichiometric proportion. It is basically a vacancy defect in ionic solids. In order to maintain electrical neutrality, the number of missing cations and anions are equal. This defect can easily be illustrated by the following figure. <img class="img-fluid question-image" alt="image" src="https://cdn.tardigrade.in/img/question/chemistry/9e4c1cb91e2dba02084aa508981868b0-.png" />

Q. Which among the following statements is true about Schottky defect ?

In this defect cation and anion are lacking in stoichiometric proportion

Formation of metal alloy is example of this defect

In this cation or anion moves from regular site to place between lattice site

In this regular cation is replaced by different cation

In Schottky defect, cation and anion are lacking in stoichiometric proportion. It is basically a vacancy defect in ionic solids. In order to maintain electrical neutrality, the number of missing cations and anions are equal. This defect can easily be illustrated by the following figure.