Question
Arrange the following in decreasing order of stability:
✓
Answer
II > IV > I > III.
$\because \mathrm{OCH}_3$ group has +R effect, $\mathrm{CH}_3$ is electron releasing will destabilize carbocation where $-\mathrm{NO}_2$ group is electron withdrawing, will destabilize carbocation.
$\because \mathrm{OCH}_3$ group has +R effect, $\mathrm{CH}_3$ is electron releasing will destabilize carbocation where $-\mathrm{NO}_2$ group is electron withdrawing, will destabilize carbocation.
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