The indicated atom is not a nucleophilic site | vedclass

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Question

(A) nucleophile is a species that can donate an electron pair to form a chemical bond. In $BH_{4}^{-}$, the boron $(B)$ atom has a formal negative cha

Vedclass · Accepted Answer

$BH_{4}^{-}$ (atom = $B$)

Vedclass · Answer

(A) nucleophile is a species that can donate an electron pair to form a chemical bond. In $BH_{4}^{-}$, the boron $(B)$ atom has a formal negative charge but it has no lone pair of electrons available for donation. In $CH_{3}MgBr$, the carbon $(C)$ atom is nucleophilic due to the $C-Mg$ bond polarity. In $CH_{3}OH$, the oxygen $(O)$ atom has two lone pairs. In $CH_{3}NH_{2}$, the nitrogen $(N)$ atom has one lone pair. Therefore, the $B$ atom in $BH_{4}^{-}$ is not a nucleophilic site. Hence, the correct option is $A$.

The indicated atom is not a nucleophilic site in

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