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The lower stability of ethyl anion compared to methyl anion and the higher stability of ethyl radical compared to methyl radical, respectively, are due to (A) +I effect of the methyl group in ethyl anion and σ → p-orbital conjugation in ethyl radical (B) –I effect of the methyl group in ethyl anion and σ → σ∗ conjugation in ethyl radical (C) +I effect of the methyl group in both cases (D) +I effect of the methyl group in ethyl anion and σ → σ∗ conjugation in ethyl radical |
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Answer» Correct option (A) +I effect of the methyl group in ethyl anion and σ → p-orbital conjugation in ethyl radical Explanation: Stability C2 H2− > CH3− In ethyl anion, methyl group have +I effect which increases e– density on carbanion so stability decreases. Stability C2 H5 > CH3 Due to σ –p orbital conjugation in ethyl radical, it is more stable. |
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