Question

Difference between metal excess defect and metal deficient defect

Answer 1

Answer:

Metal Excess Defects:

In these defects, the positive ions are in excess.

This may arise due to :

1. Anionic vacanies
2. Presence of extra cation in interstitial sites.

Metal deficient Defects :

These contain less number of positive ions than negative ions.

This may arise due to :

1. Cation vacancies
2. Extra anions occupying interstitial sites.