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An ion or molecule that is electron deficient and can accept electrons. Electrophiles are often reducing agents and Lewis acids. They are either positive ions (e.g. NO2+) or molecules that have a positive charge on a particular atom (e.g. SO3, which has an electron-deficient sulphur atom). In organic reactions they tend to attack negatively charged parts of a molecule. Compare nucleophile.

Subjects: Chemistry.

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