Learning outcomes
After studying Session 4 you should be able to:
understand how the concept of valency can account for, and predict the formulas of compoundssketch Lewis structures of molecules and ionsidentify situations where and appreciation of dative bonding is required to account for the bonding in certain molecules and ionsappreciate some molecules are not adequately represented by a single Lewis structure and seem to be a composite of two or more resonance structures.OpenLearn - Discovering chemistry

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