NEET Chemistry Organic Chemistry: Some Basic Principles & Techniques / कार्बनिक रसायन : कुछ मूलभूत सिद्धांत एवं तकन Question Bank Self Evaluation Test - Organic Chemistry - Some Basic Principles & Techniques

In the following groups

\[\underset{(I)}{\mathop{-OAc}}\,\]                                 \[\underset{(II)}{\mathop{-O}}\,Me\]

\[-\underset{(III)}{\mathop{OS{{O}_{2}}}}\,Me\]                        \[-\underset{(IV)}{\mathop{OS{{O}_{2}}}}\,C{{F}_{3}}\]

the order of leaving group ability is

A) \[I>II>III>IV\]

B) \[IV>III>I>II\]

C) \[III>II>I>IV\]

D) \[II>III>IV>I\]

Correct Answer: B

Solution :

[b] The more the electrons withdrawing groups attached to -O atom, the more is the ease of leaving.