Edexcel IAL Chemistry A2 18.2 delocalised model of benzene
Edexcel IAL Chemistry A2 18.2 delocalised model of benzene
State the bonding model clearly: carbon sigma bonds form in the ring, while p orbitals overlap sideways above and below the plane to make delocalised π electrons.
How this is tested
- Describe sideways p-orbital overlap above and below the benzene ring plane.
- Count sigma and π bonds or delocalised electrons in benzene and related arenes.
- Use dichlorobenzene isomer evidence to support the delocalised benzene model.