The molecule will have a total of 34 valence electrons, 6 from sulphur, and 7 from each of the four fluorine atoms. In sulphur tetrafluoride, the central atom is s p 3 d hybridized. sulphur forms 4 single bonds and has 1 lone pair, which means that its steric number, which is the name given to the number of regions of electron density, is equal to 5.
