Question

Impurity defect is the defect in which

• A. Both cations and anions miss from their lattice sites creating voids.
• B. Ions are replaced by different elements ions.
• C. Anions occupy interstitial voids.
• D. electrons occupy interstitial voids.

Answer 1

The correct option is B

Ions are replaced by different elements ions.

Impurity defect diagram.

In impurity defect as you see in diagram, the sodium ion is replaced by Strontium ion and balance the charge an anion miss from its lattice point.As the ion of one element is replaced by ion of other element, it is called impurity defect.