Question

Which of the following has distorted octahedral structure?

• A. $SF_{6}$
• B. $PF_{6}^{-}$
• C. $SiF_{6}^{2 -}$
• D. $XeF_{6}$

Answer 1

Answer: (D)

$XeF_{6}$ has distorted octahedral structure. Xenon in $XeF_{6}$ undergoes $sp^{3}d^{3}$ hybridisation giving pentagonal bipyramid with one axis is occupied by a lone pair. Rest other have normal octahedral structure as have $sp^{3}d^{2}$ -hybridisation.