Question

$\lbrack FeF_{6}\rbrack^{3 -}$is paramagnetic due to presence of unpaired electrons in the complex. The five electrons remains unpaired because

• A. Fluorine is the most electronegative element
• B. $F^{-}$is a weak field ligand hence does not cause pairing of electrons
• C. $F^{-}$is a strong field ligand hence does not cause pairing of electrons
• D. Pairing does not take place in iron complexes.

Answer 1

Answer: (B)

$F^{-}$is a weak field ligand hence does not cause pairing of electrons

Answer 2

$F^{-}$is weak field ligand hence it does no cause pairing of electrons.

$\lbrack FeF_{6}\rbrack^{3 -}:$