Carbocation is a group of atoms with positively charged carbon atom having six electrons in the valence shell after sharing. Carbocations are formed in the heterolysis of a bond and are planar species. Stability of
\( P \) carbocation is determined by inductive effect, hyperconjugation and resonance effect. Greater the number of contributing structures, more is the stability of a Carbocation. Electron releasing groups ( \( +\mathrm{I} \) effect) increases
W the stability of a carbocation whereas the electron withdrawing groups (-I effect) have an opposite effect.
- In which of the following cases, the carbocation (I) is less stable than the carbocation (II) ?
(A) \( \mathrm{C}_{6} \mathrm{H}_{5}-\stackrel{+}{\mathrm{C}} \mathrm{H}_{2} \) (I), \( \mathrm{CH}_{2}=\mathrm{CH}-\stackrel{+}{\mathrm{C}} \mathrm{H}_{2} \) (II)
(B)
(I), (II)
(C) \( \mathrm{CH}_{2}=\stackrel{+}{\mathrm{C}} \mathrm{H} \) (I), \( \mathrm{CH}_{3}-\stackrel{\mathrm{C}}{-}_{2}^{+} \)(II)
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