Which of the following carbocations is least | vedclass

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(D) The stability of a benzyl carbocation is influenced by the substituent present on the benzene ring. Electron-donating groups $(EDG)$ increase the

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p-Nitrobenzyl carbocation

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(D) The stability of a benzyl carbocation is influenced by the substituent present on the benzene ring. Electron-donating groups $(EDG)$ increase the stability of the carbocation by donating electron density,while electron-withdrawing groups $(EWG)$ decrease the stability by withdrawing electron density. In the given options: $1$. $p$-Methylbenzyl carbocation has a $-CH_3$ group,which is an electron-donating group ($+I$ and hyperconjugation),making it the most stable. $2$. $p$-Fluorobenzyl carbocation has a $-F$ group,which is weakly electron-withdrawing by induction $(-I)$ but can donate electrons by resonance $(+M)$. $3$. $p$-Cyanobenzyl carbocation has a $-CN$ group,which is a strong electron-withdrawing group ($-I$ and $-M$). $4$. $p$-Nitrobenzyl carbocation has a $-NO_2$ group,which is a very strong electron-withdrawing group ($-I$ and $-M$). Since the $-NO_2$ group is a stronger electron-withdrawing group than the $-CN$ group,the $p$-nitrobenzyl carbocation is the least stable among the given options.

Which of the following carbocations is least stable?

Similar Questions

Which of the following carbocations will undergo rearrangement?

What is the order of stability of the following carbocations?
$(X). CH_3 - \overset{\oplus}{C}H - CH_3$
$(Y). CH_3 - \overset{\oplus}{C}H - OCH_3$
$(Z). CH_3 - \overset{\oplus}{C}H - COCH_3$

Arrange the following carbanions in the decreasing order of their stability:
$(1) CH_3-CH_2^-, (2) CH_2=CH^-, (3) HC \equiv C^-$

Which is the decreasing order of stability?
$(i)$ $CH_3-CH^{+}-CH_3$
$(ii)$ $CH_3-CH^{+}-OCH_3$
$(iii)$ $CH_3-CH^{+}-COCH_3$

Rank the following radicals in order of increasing stability (least $ < < < $ most).

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