Answer: -
The sulfur has 5 electron domains around it. It is seesaw-shaped.
Explanation: -
In SF4 there are four S—F bonds. There is also a nonbonding pair.
Thus the total number of electron domains = number of bonds + number of nonbonding pair
= 5
Since there are 5 electron domains, the domains will be like trigonal bipyramid. The domain from the nonbonding pair will point toward an equatorial position.
The four remaining S-F bonds will point toward the remaining four positions of the trigonal bipyramid.
The final shape is seesaw-shaped.
