Q. Which of the following orders is not correct regarding the $–I$ effect of the substitutents?
A) $- I < - Cl < - Br < - F$
B) [image:12_image57.emf]
C) [image:12_image58.emf]
D) [image:12_image59.emf]
Explanation
(c)
$- I\$power of groups in decreasing order with respect to the reference H
$NO_{2} > CHO > COOR > F > Cl > Br > I > OH > OR > NH_{2}$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.