Draw structures of SF4 in a way that indicates their molecular shape?

Question

Where there is more than on structure, draw the others b)indicate the polarity of all the bonds in the molecule by drawing arrows and determine the overall dipole moment. 

Answer 1

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Sulfur tetrafluoride has 5 regions of electron density around the central sulfur atom (4 bonds and one lone pair). These are arranged in a trigonal bipyramidal shape with 102° F-S-F bond angles between the equatorial fluorine atoms and 173° between the axial fluorine atoms.