Asked in PMC Practice Test 29 (2021) 2021Moderate

The unhybridized p orbitals of benzene are present in the form of _ ?

Correct answer: C. In the form of cloud above and below the benzene ring

  • A. Between the C-C bonds of benzene
  • B. Above and below the carbon bonds
  • C. In the form of cloud above and below the benzene ring
  • D. None of these

Explanation

Benzene is a cyclic molecule in which all of the ring atoms are sp2-hybridized. This allows the pi electrons to be delocalized in molecular orbitals that extend all the way around the ring, above and below the plane. The unhybridized p orbital lie above and below the benzene ring.

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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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