Explain the bonding model for benzene using delocalised electrons.

In the subtopic Benzene and electrophilic substitution (A-level only), this AQA A-Level Chemistry 7405 learning objective focuses on explain the bonding model for benzene using delocalised electrons. It belongs to Aromatic chemistry (A-level only), so revision should stay anchored to this exact subtopic rather than drifting into a generic GCSE-level chemistry summary. Approved keywords to use include benzene. Delocalised Electrons. means electrons that are shared over several adjacent atoms in a ring, creating a continuous cloud of electron density above and below the ring plane Avoid the mistake of students may overlook the comparison of benzene's stability with theoretical cyclohexatriene, mistakenly believing they are equally stable; instead, to fix this, explain that benzene is more stable than cyclohexatriene due to resonance stabilization from delocalised electrons, which lowers its energy compared to the hypothetical structure For exam answers, outline the steps involved in electrophilic substitution reactions, focusing on the role of delocalised electrons