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Analyze the specific sequence of manganese oxides: , , and . According to the principles of transitid and f Block Elements Chemistry Question

Question

Analyze the specific sequence of manganese oxides: $MnO$, $MnO_2$, and $Mn_2O_7$. According to the principles of transition metal chemistry, what is the strict chronological sequence of their acid-base character?

Answer: B

💡 Solution & Explanation

As the oxidation number of the metal increases, the ionic character decreases and covalent character increases. Lower oxidation states ($+2$, like $MnO$) are basic. Intermediate states ($+4$, like $MnO_2$) are amphoteric. High states ($+7$, like $Mn_2O_7$) are strongly acidic and covalent.

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