Answer: Benzyl cation.
- A Benzyl cation
- B Allyl cation
- C Isopropyl cation
- D tert-Butyl cation
Correct answer: A. Benzyl cation
Explanation: The benzyl cation is stabilised by extensive resonance delocalisation into the aromatic ring, making it more stable than allyl and the alkyl cations.
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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