Question

Question 15-16 is based on the following given information: A sample of ferrous oxide has actual formula $F{e}_{0.93}O$. What type of nonstoichiometric defect is present in this sample?

• A. Impurity defect
• B. Metal excess defect due to presence of extra cations at interstitial sites
• C. Metal excess defect due to anionic vacancies
• D. Metal deficiency defect

Answer 1

The correct option is D Metal deficiency defect

Metal deficiency defect is present in the sample because iron is less in amount than that required for stoichiometric composition.