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Answer -
An electrophileis a reagent that takes away an electron pair. In other words, anelectron-seeking reagent is called an electrophile (E+).Electrophiles are electron-deficient and can receive an electron pair.
Carbocations
and neutral molecules having functional groups such as carbonyl group (
) are examples ofelectrophiles.A nulceophile is areagent that brings an electron pair. In other words, a nucleus-seeking reagentis called a nulceophile (Nu:).
For example: OH–,NC–, carbanions (R3C–), etc.
Neutral molecules suchas H2Ö and ammonia also act as nulceophiles because of the presenceof a lone pair.