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Arrange the following groups in increasing order of - I effect 

a) -NO_2

b) -F 

c) -OH 

d) -NH_2

Option: 1

a < b < c < d 


Option: 2

b < c < a < d 


Option: 3

c < d < b < a 


Option: 4

d < c < b < a 


Answers (1)

best_answer

-I effect is directly proportional to the electronegativity of the key elements of the group 

In  - NO_2 \rightarrow N is in + 5 oxidation state which makes it most electron deficient as compared to other given option 

electronegativity 

- F > - OH > -NH_2

So, the order of - I effect shown by the given groups must be 

- NH_2 < -OH < -F < - NO_2

Order will be:- d < c < b <a 

Option 4 is correct.

Posted by

HARSH KANKARIA

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