Which among the following is NOT a feature of | vedclass

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(C) $1$. The $S_N2$ mechanism is a concerted, single-step reaction.$2$. In this mechanism, the nucleophile attacks from the backside of the carbon ato

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Formation of planar carbocation intermediate

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(C) $1$. The $S_N2$ mechanism is a concerted, single-step reaction.$2$. In this mechanism, the nucleophile attacks from the backside of the carbon atom, leading to an inversion of configuration.$3$. Bond breaking and bond formation occur simultaneously through a pentacoordinate transition state.$4$. $S_N2$ reactions do not involve the formation of a carbocation intermediate; carbocation formation is a characteristic of $S_N1$ mechanisms.$5$. Therefore, the formation of a planar carbocation intermediate is $NOT$ a feature of the $S_N2$ mechanism.

Which among the following is $NOT$ a feature of $S_N2$ mechanism?

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