Department of Pre-University Education, KarnatakaPUC Karnataka Science Class 12
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Account for the Following: Mn Shows the Highest Oxidation State of +7 with Oxygen but with Fluorine, It Shows Oxidation State of +4. - Chemistry

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Account for the following:

Mn shows the highest oxidation state of +7 with oxygen but with fluorine, it shows oxidation state of +4.

Give reasons:

Mn shows the highest oxidation state of +7 with oxygen but with fluorine, it shows the highest oxidation state of +4.

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Solution 1

In case of oxygen, Mn shows the highest oxidation state of +7. This is because Mn forms pπ–dπ multiple bonds using 2p orbitals of oxygen and 3d orbitals of Mn. With F, Mn displays an oxidation state of +4 because of the single bond formation caused by the unavailability of 2p orbitals in F for multiple bonding.

Solution 2

Mn shows the highest oxidation state of +7 with oxygen because it can form ppi−dpi multiple bonds using 2p orbital of oxygen and 3d orbital of Mn. On the other hand, Mn shows the highest oxidation state of +4 with flourine because it can form single bond only.

Concept: General Properties of the Transition Elements (D-block)
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