Benzene shows least addition reactions. Explain.
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32
Answer:
- Benzene is a planar molecule, in which each carbon atom is sp² hybridized with bond angle 120°.
- It has been proved by X-Ray data that, all the six C-C bond lengths are of the same order (140 pm) which is intermediate between C-C single bond (154 pm) and C = C double bond (133 pm).
- Hence, the bonds between carbon atoms are neither pure single nor double bonds, but are of hybrid type.
- Therefore due to absence of pure double bonds, benzene gets extra stability and shows reluctance for addition reactions under normal condition.
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1
Answer:
In benzene, the π-electrons are delocalised and makes the structure more stable. Delocalization of π electron is called resonance. Thus, benzene does not give addition reactions because of resonance stabilisation.
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