In which type of point defect are the cations and anions absent in stoichiometric proportions? a) Schottky defect b) Frenkel defect c) Impurity defect d) The given situation does not occur for any point defect.

In which type of point defect are the cations and anions absent in stoichiometric proportions?

a) Schottky defect

b) Frenkel defect

c) Impurity defect

d) The given situation does not occur for any point defect.

Expert Solution

Answer : a) Schottky defect

Explanation :

As vacancy defect is when an atom, ion or molecule is absent from its position in the lattice. When this occurs for ionic solids, it is called a Schottky defect.

Cations and anions are found to be absent in stoichiometric proportion so that the electrical neutrality of the crystal is maintained.

Due vacancy of an atom, ion or molecule the void is created and this is responsible for defect in the lattice.

a) Schottky defect

Rakesh answered 2 years ago

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