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MolSynapse / Question bank / Organic Reaction Mechanisms I: Nucleophiles and Carbonyl Addition / Electrophiles, nucleophiles, nucleophilicity and leaving groups

JEE Main levelOne or more correct optionsDifficulty 2 of 3o1019

Which of the following species can act as electrophiles?

A $AlCl X_{3}$
B $NH X_{3}$
C $NO X_{2} X^{+}$
D $CH X_{3} O X^{-}$

Answer: A, C

Electrophiles are electron-pair acceptors.

AlCl X_{3}

has an incomplete octet and the nitronium ion

NO X_{2} X^{+}

is a cation with an electron-poor nitrogen.

NH X_{3}

and

CH X_{3} O X^{-}

have lone pairs and are nucleophiles.

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