The VESPR Theory allows us to predict models of molecular shapes, which thus helps us better understand the behaviors and interactions of molecules.

Use this guide to help you determine the Molecular Shape, Electron Geometry, Hybridization, and Bond Angles of a molecule.

A few things to note:

The “Steric Number” or “Total Electron Domains” only considers the bonded atoms and lone pairs around the central atom A. While there are lone pairs on B or other atoms, we are not interested in these when determining the Molecular Shape.

A = the central atom

B = an atom bonded to A

E = a lone pair on A

Click here for the guide with examples for each type.