Correct arrangement of the following nucleophiles in the order of their nucleophilic strength is :

C H_{3} C O O^{-} < C_{6} H_{5} O^{-} < C H_{3} O^{-} < O H^{-}

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C_{6} H_{5} O^{-} < C H_{3} C O O^{-} < C H_{3} O^{-} < O H^{-}

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C H_{3} C O O^{-} < C_{6} H_{5} O^{-} < O H^{-} < C H_{3} O^{-}

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C_{6} H_{5} O^{-} < C H_{3} O^{-} < C H_{3} C O O^{-} < O H^{-}

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Solution

The correct option is C $C H_{3} C O O^{-} < C_{6} H_{5} O^{-} < O H^{-} < C H_{3} O^{-}$
Nucleophilicity increases as the density of negative charge increases. An anion is always a better nucleophile than a neutral molecule, so the conjugate base is always a better nucleophile. A highly electronegative atom is a poor nucleophile because it is unwilling to share its electrons.

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