SF4 :

First draw the Lewis dot structure:
SF4 Lewis Structure
Electron geometry: trigonal bipyramidal. Hybridization: sp3d

Next draw the 3D structure using VSPER rules:

The geometry of SF4 is seesaw with an asymmetric electron region distribution around the central atom.
Therefore this molecule is polar.

Sulfur tetrafluoride on wikipedia.

Back to Molecular Geometries & Polarity Tutorial: Molecular Geometry & Polarity Tutorial.

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