Sulfur is the central atom:

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There are 6 + 4×7 = 34 valence electrons, and 8 are taken for making 4 covalent bonds. Each fluorine takes three lone pairs, so there are 34 – (8 + 4×6) = 2 electrons left which go to the sulfur as a lone pair:

The central atom has 4 atoms connected to it, and one lone pair, therefore, the **electron geometry is trigonal bipyramidal** while the **molecular geometry is seesaw**:

*Notice that the lone pair does not go in an axial position (up or down).*

There are 5 units (atoms and lone pairs) on the central atom, and to accommodate them, it needs 5 orbitals which is achieved through *sp*^{3}*d* hybridization.

Check this 99-question multiple-choice quiz on Geometry and Hybridization:

**Check Also**

- The VSEPR Model
**VSEPR Theory Practice Problems**- Hybridization of Atomic Orbitals
*sp*,*sp*^{2},*sp*^{3},*sp*^{3}*d*, and*sp*^{3}*d*^{2}Hybridization Practice Problems