Learning outcomes - after studying this topic, you should be able to:

• draw out plausible Lewis structures for simple polyatomic molecules
• assign bond orders based on sharing of electron pairs and resonance structures
• identify carbon-carbon single, double and triple bonds, as well as aldehyde, alcohol and nitrile functional groups and their bonding

• Section 5.3 (in Blackman, Bottle, Schmid, Mocerino and Wille, Chemistry, 3^rd Edition, 2015 (John Wiley))

• Lewis theory of bonding (in ChemWiki)

Lewis structures Contributed by Adam Bridgeman

Valence bond model of covalent bonding Contributed by Adam Bridgeman

Oxidation numbers Contributed by Adam Bridgeman

Lewis structures Description: Interactive approach to building Lewis structures Tags: Lewis structures Contributed by Adam Bridgeman

Drawing the Lewis structure of the sulfate ion Tags: Lewis structure | formal charges Contributed by Alice Williamson

Drawing Lewis Structures (short video tutorial) Description: Video tutorial Tags: lewis structures Contributed by Liz New

Molecular shape and dipoles (short video tutorial) Description: Video tutorial on how to work out if a molecule is polar or not. Tags: VSEPR | Lewis structures Contributed by Chiara Neto

Shapes and polarity Tags: VSEPR | Lewis structures | polarity Contributed by Adam Bridgeman