# Learning outcomes

After studying Session 3 you should be able to:

- understand the common themes running through ionic, covalent and metallic descriptions of chemical bonding
- understand how the concept of electronegativity and its variation over the periodic table can be used to rationalise the nature of the bonding in substances
- appreciate how chemical substances can be described (and classified) in terms of structure and bond type.

OpenLearn - Discovering chemistry
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