The order of stability of metal oxides is
Show Hint
- $Al_{2}O_{3}
- $Cr_{2}O_{3}
- $Fe_{2}O_{3}
- $Fe_{2}O_{3}
The Correct Option is C
Solution and Explanation
The stability of metal oxides generally increases with the electropositive character of the metal.
Step 2: Comparison
Magnesium is the most electropositive among the given metals, making $MgO$ the most stable oxide. Iron is the least electropositive, making $Fe_2O_3$ the least stable.
Step 3: Conclusion
The correct increasing order of stability is: $Fe_{2}O_{3}<Cr_{2}O_{3}<Al_{2}O_{3}<MgO$.
Final Answer: (c)
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