Analyze the specific sequence of manganese oxides: , , and . According to the principles of transiti — d 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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