Which of the following act as nucleophiles?

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Question

(D) nucleophile is a chemical species that donates an electron pair to form a chemical bond in a reaction. $CH_3NH_2$ has a lone pair on the nitrogen

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All of the above

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(D) nucleophile is a chemical species that donates an electron pair to form a chemical bond in a reaction. $CH_3NH_2$ has a lone pair on the nitrogen atom. $RO^{-}$ is an anion with lone pairs on the oxygen atom. $CH_3MgBr$ contains a carbanion-like character $(CH_3^{-})$ due to the polar $C-Mg$ bond,making it a strong nucleophile. Therefore,all of the given species act as nucleophiles.

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