Consider the following anions: When attached to sp3-hybridized carbon, their leaving group ability in nucleophilic substitution reaction decreases in the order:
A
I > II > III > IV
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B
I > II > IV > III
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C
IV > I > II > III
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D
IV > III > II > I
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Solution
The correct option is B I > II > IV > III CF3−O||S||O−O−>Ph−O||S||O−o−>CH3−C||O−O−>PhO− → weak bases are good leaving groups