JEE Main Chemistry question

Chemistry Organic Chemistry - Some Basic Principles and Techniques JEE Main

The correct stability order for the given radical/carbanion species (I–IV, differing in the position of the unpaired electron/charge along a conjugated chain) is

(A)II>IV>I>III
(B)I>II>III>IVCorrect
(C)II>I>IV>III
(D)I>III>II>IV

Answer: (B)

Solution

Stability of a delocalized species increases with the number and quality of resonance contributors (greater conjugation length, more favorable charge/radical placement, and

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Question ID VK-139044