This interactive activity from ChemThink explains the valence shell electron pair repulsion (VSEPR) theory. Understand why, within a covalently-bonded molecule, areas with a higher concentration of electrons repel each other to be as far apart as possible. See how Lewis structures can be used to predict the shape of a molecule, and learn about common molecular geometries such as linear, trigonal planar, bent, tetrahedral, and trigonal pyramid.