Question

$C{F}_4,S{F}_4$ and $Xe{F}_4$ contain the following electronic structure on their central atoms. Which one is correct option?

• A. $1,2$ and $3$ lone pairs of electrons respectively
• B. $0,1$ and $2$ lone pairs of electrons respectively
• C. $1,1$ and $1$ lone pairs of electrons respectively
• D. No lone pairs of electrons on any molecule

Answer 1

Answer: (B)

$C{F}_4-s{p}^3$, tetrahedral but no unpaired electron.
$S{F}_4-s{p}^{3}d$, trigonal bipyramidal with one unpaired electron.
$Xe{F}_4-s{p}^3{d}^2$, square planar, two lone pairs of electrons.