Example of nucleophile is:
Correct answer: D. CN
- A. BF3
- B. SO3
- C. AlCl3
- D. CN
Explanation
Nucleophiles are elements/compounds containing extra pairs of electrons. CN is the only compound having extra pair of electrons in the list above.
This question appeared on the NUMS 2017 paper, which you can sit online with every answer explained.
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About Nucleophilic Substitution
Nucleophilic substitution replaces a leaving group in an alkyl halide when an electron-rich nucleophile attacks the carbon atom. The topic compares SN1 and SN2 mechanisms, including reaction conditions, substrate structure, solvent effects, nucleophile strength, carbocation formation and stereochemical changes, and distinguishes substitution from elimination.
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Which class of halogenoalkane can react with alkali by an SN2 mechanism?
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