A nucleophile is
Correct answer: D. Lewis base
- A. Lewis acid
- B. Bronsted acid
- C. Bronsted base
- D. Lewis base
Explanation
A nucleophile is a chemical species that donates an electron pair to form a new chemical bond. It is characterized by its electron-rich nature and its ability to participate in nucleophilic reactions. In Lewis acid-base theory, a nucleophile is considered a Lewis base, as it can donate electrons to form a coordinate covalent bond.
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About Bronsted-Lowry and Lewis Concepts
The Brønsted-Lowry concept defines acids as proton donors and bases as proton acceptors, producing conjugate acid-base pairs. The Lewis concept extends the idea to electron-pair acceptors and donors, so compounds such as BF3 and NH3 can be treated as acid and base even without proton transfer, unlike the Arrhenius definition.
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