Which of the following is most acidic oxide? (a) \( \mathrm{MnO} \) (b) \( \mathrm{MnO}_{2} \) (...

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Which of the following is most acidic oxide?
(a) \( \mathrm{MnO} \)
(b) \( \mathrm{MnO}_{2} \)
(c) \( \mathrm{Mn}_{2} \mathrm{O}_{7} \)
(d) \( \mathrm{Mn}_{3} \mathrm{O}_{4} \)
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