14. Chemical bonding and structure

Delocalisation of Electrons

Delocalisation of Electrons  Describe the delocalisation of π electrons and explain how this can account for the structures of some species Not all molecules can be accurately represented by a single Lewis structure diagram. Some compounds are resonance structures,...

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Hybridisation

Hybridisation   Describe σ and π bonds   According to Lewis theory, covalent bonds consist of shared pairs of electrons, creating an area of electron density between the atoms. Also, atomic orbital theory states that electrons exist in atomic orbitals that are regions...

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Shapes of Molecules and Ions

Shapes of Molecules and Ions   Predict the shape and bond angles for species with five and six negative charge centres using the VSEPR theory Although most atoms will aim to form an octet of electrons, this rule can be broken in some cases, such as period 3 elements...

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