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Question: Answered & Verified by Expert
The indicated atom is not a nucleophilic site in
ChemistryGeneral Organic ChemistryWBJEEWBJEE 2019
Options:
  • A $\mathrm{BH}_{4}^{-}$ (atom = B)
  • B $\mathrm{CH}_{3} \mathrm{Mg}$ (atom = C)
  • C $\mathrm{CH}_{3} \mathrm{OH}$ (atom = O)
  • D $\mathrm{CH}_{3} \mathrm{NH}_{2}$ (atom = N)
Solution:
1043 Upvotes Verified Answer
The correct answer is: $\mathrm{BH}_{4}^{-}$ (atom = B)
In BH ${ }_{4}^{-}$ indicated atom is not a nucleophilic
site because there is no lone-pair on $\mathrm{B}^{\prime}$ atom.
Hence, the option (a) is correct answer.

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