Per NCERT §9.5.5 (EAS mechanism), the carbocation intermediate formed during EAS on benzene is called which species?
AArenium ion (σ-complex)
BPhenonium ion (bridged)
CVinyl cation alternative
DCarbanion intermediate
Answer & Solution
Correct answer: A. Arenium ion (σ-complex)
NCERT §9.5.5(b): electrophile addition creates a σ-complex (arenium ion) in which one ring carbon is sp³ and the ring loses aromaticity briefly.
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