Standard Books Chemistry Crystal Field Theory MCQ Question with Solution

[FeF₆]³⁻ is paramagnetic due to presence of unpaired electrons in the complex. The five electrons remain unpaired because

A

fluorine is the most electronegative element

B

F⁻ is a weak field ligand hence does not cause pairing of electrons

Option B

Fluoride ion (F⁻) is a weak field ligand and does not cause pairing of electrons in the d-orbitals, resulting in unpaired electrons.

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STANDARD Chemistry Crystal Field Theory MCQ Question