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| When attached to \[s{{p}^{3}}\]-hydridized carbon, their leaving group ability in nucleophilic substitution reaction decreases in the order: |
A) \[I>II>III>IV\]
B) \[I>II>IV>III\]
C) \[IV>I>II>III\]
D) \[IV>III>II>I\]
Correct Answer: B
Solution :
[b] \[C{{F}_{3}}-\underset{O}{\overset{O}{\mathop{\underset{||}{\overset{||}{\mathop{S}}}\,}}}\,-{{O}^{-}}>\underset{L.G.\,Ability}{\mathop{Ph-\underset{O}{\overset{O}{\mathop{\underset{||}{\overset{||}{\mathop{S}}}\,}}}\,-{{O}^{-}}}}\,>C{{H}_{3}}-CO{{O}^{-}}>Ph{{O}^{-}}\]
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