Question

${\left[Fe{F}_6\right]}^{3-}$ has Fe atom _______ hybridised with unpaired ______ electrons.

• A. $d^{2}s{p}^3,4$
• B. $d^{2}s{p}^3,5$
• C. $s{p}^3{d}^2,5$
• D. $s{p}^3{d}^2,3$

Answer 1

The correct option is C $s{p}^3{d}^2,5$

${\left[Fe{F}_6\right]}^{3-}$, $F{e}^{+3},d^5$ configuration, high spin complex so it have 5 unpaired electron & $s{p}^3{d}^2$ hybridization since $F^{-}$ is weak field ligand.