The group formed by the removal of one H atom from the benzene ring is called _.
Correct answer: C. Phenyl group
- A. Alkyl group
- B. Benzyl group
- C. Phenyl group
- D. Ethyl group
Explanation
Reason: A benzene ring has the formula of C6H6. When a hydrogen atom is removed, this becomes C6H5. C6H5 is known as a phenyl group.
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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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