Which among MnO₂, Mn₂O₃, MnO₃ and Mn₂O₇ contains the maximum percentage by weight of combined oxygen?
Correct answer: D. Mn₂O₇
- A. MnO₂
- B. MnO₃
- C. Mn₂O₃
- D. Mn₂O₇
Explanation
To find the maximum percentage, observe the mass ratio of oxygen to manganese (Mn ≈ 55, O ≈ 16). In Mn₂O₇, the mass ratio of O:Mn is (7×16):(2×55) or 112:110. Since the mass of oxygen is greater than the mass of manganese, it has the highest oxygen percentage.
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