Q. The order of stability of metal oxides is?

Question ID: 21132
  1. Cr2O3 < MgO < Al2O3 < Fe2O3
  2. Al2O3 < MgO < Fe2O3< Cr2O3
  3. Fe2O3 < Al2O3 < Cr2O3 < MgO
  4. Fe2O3 < Cr2O3 < AIZO3 < MgO

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