Which one of the following carbocations is th | vedclass

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(B) The stability of a carbocation is determined by factors such as resonance,inductive effect,and hyperconjugation. In the given options,the carbocat

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$CH_2^+=CH-O-CH_3$

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(B) The stability of a carbocation is determined by factors such as resonance,inductive effect,and hyperconjugation. In the given options,the carbocation is in conjugation with an oxygen atom. In option $B$ $(CH_2^+=CH-O-CH_3)$,the oxygen atom has lone pairs that can participate in resonance (delocalization of electrons) to stabilize the positive charge on the carbon atom. This $+M$ (mesomeric) effect of the $-OCH_3$ group is very strong and provides significant stability to the carbocation. In option $A$,the oxygen is separated by a $-CH_2-$ group,reducing the resonance effect. In option $C$,the $-O-CO-CH_3$ group is electron-withdrawing due to the carbonyl group,which destabilizes the carbocation. In option $D$,the fluorine atom is highly electronegative and exerts a strong $-I$ effect,which destabilizes the carbocation. Therefore,the carbocation in option $B$ is the most stable.

Which one of the following carbocations is the most stable?

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Among the following carbocations:
$(I)$ $Ph_{2}\stackrel{+}{C} CH_{2} Me$
$(II)$ $Ph CH_{2} CH_{2} \stackrel{+}{C} HPh$
$(III)$ $Ph_{2} CH \stackrel{+}{C} HMe$
$(IV)$ $Ph_{2} C(Me) \stackrel{+}{C} H_{2}$
The order of stability is:

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