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Valence Shell Electron Pair Repulsion (VSEPR) Theory

The basic principle of the Valence Shell Electron Pair Repulsion (VSEPR) theory:

Each group of valence electrons around a central atom is located as far as possible from the others in order to minimize repulsions.

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Each type of model is made of:

A — central atom

X — ligand (bonding electron pair)

E — nonbonding electron pair

The five basic molecular shapes:

• linear

• trigonal planar

• tetrahedral

• trigonal bipyramidal

• octahedral

The Integrated Data Sources for ChemicalData were very helpful in finding multiple examples for the various types of VSEPR models.

Based on: Polytopes Package in Mathematica

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