MCQ
Which of the following has the highest nucleophilicity
- A${F^ - }$
- B$O{H^ - }$
- ✓$CH_3^ - $
- D$NH_2^ - $
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$(I)\,\,B{r^ - }{\mkern 1mu} {\mkern 1mu} {\mkern 1mu} {\mkern 1mu} $ $(II)\,\,\begin{array}{*{20}{c}}
{{\mkern 1mu} {\mkern 1mu} {\mkern 1mu} {\mkern 1mu} {\mkern 1mu} O{\mkern 1mu} } \\
{{\mkern 1mu} {\mkern 1mu} {\mkern 1mu} {\mkern 1mu} ||} \\
{{H_3}C - C - {O^ - }}
\end{array}$ $(III)\,\,C{H_3}C{H_2}{O^ - }$ $(IV)\,\,Ph - {O^ - }$