Which one the following is a Nucleophile.
Correct answer: A. H2O
- A. H2O
- B. AlCl3
- C. BF3
- D. Cl2
Explanation
A nucleophile is a species that donates a pair of electrons to form a covalent bond with an electrophile. Water (H2O) is a nucleophile because it has a lone pair of electrons on the oxygen atom, which can be donated to form a bond.
This question appeared on the KMU MDCAT 2023 (retake) 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.
Practise Alkyl Halides
458 free Alkyl Halides MCQs from Chemistry, each with the correct answer and an explanation. Unlimited attempts, no account needed.
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