Question

Formula of metal oxide with metal deficiency defect in its crystal is $A_{0.8}O$. The crystal contains $A^{2+}$ and $A^{3+}$ ions. The fraction of metal existing as $A^{2+}$ ions in the crystal is -

• A. 0.96
• B. 0.04
• C. 0.50
• D. 0.31

Answer 1

Answer: (C)

Correct answer is (c) 0.50