The increasing order of nucleophilicity of the following nucleophilies is :
Nucleophile -
Those e- rich chemical species having capacity to attack e-deficient portion of substrate.
- wherein
Nucleophile must have complete octet and atleast one lone pair
Order of Nucleophilicity is
Both are resonance stabilized ion so, donating tendency on oxygen is reduces.
Therefore,
Option 3)
Option 4)
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