Arrange the following functional groups in the order of decreasing -I power (-ve inductive effect ):
The group which withdraws electrons more will have more -I power.
→ Because of full or partial positive charge directly attached to carbon, the power of -I effect varies.
Here, in case of −SO3H
oxygen is more electronegative than S. Therefore, it will withdraw electrons from S making it positive.Therefore,
-I effect will be more In −SO3H
→ Cl is one of the most E.N. atom
Therefore, the order of -I effect is:
−SO3H > −Cl > −NH2 > −H