Question

$[Fe{F}_6{]}^{3-}$ have _________ hybridisation and ________ geometry.

• A. $d^{2}s{p}^3$, octahedral
• B. $s{p}^3{d}^2$, octahedral
• C. $ds{p}^{3}d$, octahedral
• D. $ds{p}^2$ square planer

Answer 1

Answer: (B)

$s{p}^3{d}^2$, octahedral

Electronic configuration of $Fe$ is $\left[Ar\right]3d^{6}4s^2$ as in this compound $Fe$ has $+3$ oxidation state and as $F^{-}$ is a weak ligand $s{p}^3{d}^2$ hybridization and octahedral geometry is possible here. Hence, option $B$ is correct option.