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Subject - Chemistry:

Basics

MCQ - 87-2273

Question:

Which of the following is NOT a nucleophile

  1. OH-
  2. NH3
  3. BF3
  4. NH3

Correct Answer: C

Explanation:

A nucleophile is a chemical species that donates an electron pair to an electrophile to form a chemical bond in relation to a reaction. All molecules or ions with a free pair of electrons or at least one pi bond can act as nucleophiles. Because nucleophiles donate electrons, they are by definition Lewis bases. OH- and HSO3- can donate electron, NH3 has a lone pair, so it can donate an electron a lone pair. All these are nucleophiles. BF3 does not has any lone pair in its structure, it is not a nucleophile.

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645 MCQ for effective preparation of the test of Basics of Chemistry section.

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