Understanding and predicting the structures of molecules and ions are important aspects of chemistry. These pages introduce some of these concepts and give you practice in using them. In particular, the concept of Valence Shell Electron Pair Repulsion, VSEPR, will be used. Some of these pages use a molecular structure viewer, Chime, that is free and available for Windows, Macintosh, and UNIX.

Chime and Browser Information:

Browser: You must be using Netscape Navigator or Communicator (version 4.05 or higher) or Internet Explorer to view these molecular model pages.

Chime: You must have the Chime plugin installed to view the molecular models.


Table of electron-pair geometries and molecular geometries for 2 through 4 valence shell electron pairs.

Database of structures.

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