Question
$$C{F_4},S{F_4}$$ and $$Xe{F_4}$$ contain the following electronic structures 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 :
0, 1 and 2 lone pairs of electrons respectively
Solution :
$$C{F_4} - s{p^3},$$ 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.