GOC and Organic Chemistry BasicshardMCQ SINGLE

Based on the phenomenon of hyperconjugation, which of the following alkenes exhibits the maximum theGOC and Organic Chemistry Basics Chemistry Question

Question

Based on the phenomenon of hyperconjugation, which of the following alkenes exhibits the maximum thermodynamic stability (and consequently, the lowest relative heat of hydrogenation)?

Answer: C

💡 Solution & Explanation

The stability of an alkene is directly proportional to the number of hyperconjugative structures it can form, which equals the number of $\alpha$ -hydrogens. 2,3-Dimethyl-2-butene has four methyl groups attached directly to the double-bonded carbons, providing $4 \times 3 = 12$ $\alpha$ -hydrogens. This offers maximum hyperconjugative stabilization.

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