Which one of the following structures does the benzene molecule have?
Correct answer: B. Delocalized Pi-Electron Charge
- A. Two Double Bonds
- B. Delocalized Pi-Electron Charge
- C. Three Double Bonds
- D. One Sigma Bond
Explanation
Benzene is a cyclic molecule in which all of the ring atoms are sp2-hybridized and contain double bonds. Benzene is also a cyclic molecule in which all of the ring atoms are sp2-hybridized, which allows the π electrons to be delocalized in molecular orbitals that extend all the way around the ring, above and below the plane of the ring. A benzene molecule has a delocalized pi-electron charge, which allows resonance due to conjugation. It gives benzene stability. We cannot say that benzene has three double bonds because its double bonds are not confined to a single location; instead, they are delocalized.
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About Benzene and Aromatic Compounds
Benzene has a planar ring of delocalised π electrons, giving aromatic stability and equal carbon-carbon bond lengths. The topic covers resonance, electrophilic substitution reactions such as nitration, halogenation, sulphonation and Friedel-Crafts reactions, along with substituent effects and the distinction between substitution in benzene and addition in ordinary alkenes.
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