Answer: Benzyl carbocation.
- A Methyl carbocation
- B Ethyl carbocation
- C Benzyl carbocation
- D Vinyl carbocation
Correct answer: C. Benzyl carbocation
Explanation: Benzyl carbocation is resonance stabilised by the benzene ring.
Geometric (cis-trans) isomers of 1,2-dichloroethene differ only in the relative arrangement of groups across the rigid C=C double bond.
Concept context
General Organic Chemistry covers the rules behind all organic reactions. Covers inductive effect, resonance, hyperconjugation, types of reactions (substitution, addition, elimination), and isomerism including optical and geometric forms.
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