Oxidation States

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The highest oxidation state exhibited by manganese in its compounds is:

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Subject: chemistry
Chapter: d- and f-block elements
Topic: oxidation states
Difficulty: Easy
Year: 2025

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Correct Answer:

Manganese ( $M n$ ) has the electronic configuration $[A r] 3 d^{5} 4 s^{2}$ .

It has the maximum number of unpaired electrons in the $3 d$ series. It can lose or share all $7$ valence electrons ( $5$ from $3 d$ and $2$ from $4 s$ ).
Maximum State: $+ 7$ , which is seen in the Permanganate ion ( $M n O_{4}^{-}$ ).
This is the highest oxidation state for any element in the first transition ( $3 d$ ) series.

This easy difficulty chemistry question is from the chapter d- and f-block elements, covering the topic of oxidation states. It appeared in the 2025 exam.

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Oxidation States

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