The VSEPR Valence Shell Electron Pair Repulsion geometry of the molecule SF4 sulfur tetrafluoride can be determined by first analyzing its Lewis structure. Sulfur S has 6 valence electrons, and each fluorine F atom has 7 valence electrons. In SF4, sulfur forms four bonds with four fluorine atoms, using 4 of its valence electrons. The remaining 2 valence electrons on sulfur form a lone pair.Now, we can determine the VSEPR geometry by considering the number of bonding electron pairs and lone pairs around the central atom S . In SF4, there are 4 bonding electron pairs and 1 lone pair around the sulfur atom.According to the VSEPR theory, the electron pairs will arrange themselves to minimize repulsion. In the case of SF4, the electron pairs form a trigonal bipyramidal arrangement, with the lone pair occupying one of the equatorial positions. This results in a molecular geometry known as see-saw or distorted tetrahedron.