Chemistry - Complete d-block Question with Solution | TestHub

The correct option is (B) Oxygen has the ability to form multiple bonds.

Multiple bonding: Oxygen can form $p\pi -d\pi$ multiple bonds with manganese by sharing its lone pairs into empty $d$-orbitals.

High oxidation state: This multiple bond formation effectively stabilizes the high $+7$ oxidation state in Mn₂O₇.

Fluorine limitation: Fluorine is highly electronegative but can only form single bonds ($\sigma$-bonds).

Lower stability: Because it lacks multiple-bonding capability, fluorine can only stabilize manganese up to $+4$ in MnF₄.