medium · MCAT chem-phys
Which of the following best describes the difference between a nucleophile and an electrophile in an organic chemistry reaction?
- A nucleophile is always a positively charged cation.
- A nucleophile is an electron-rich species that seeks an electron-poor center; an electrophile is an electron-poor species.
- Nucleophilicity is determined solely by the steric bulk of the molecule.
- An electrophile acts as a Lewis base by donating a pair of electrons.
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