Example of a nucleophile is:
Correct answer: D. CN
- A. BF3
- B. AlCl3
- C. SO3
- D. CN
Explanation
A nucleophile is a species that donates a pair of electrons to form a covalent bond. Examples of nucleophiles include negatively charged ions (such as CN-, OH-, and NH2-) and neutral molecules with a lone pair of electrons (such as H2O, NH3, and CH3OH). In this case, CN- is a nucleophile.
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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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