Which of the following order is correct if we consider +I power?
Tertiary-alkyl secondary-Alkyl primary-alkyl
I II III
Which of the following order is correct if we consider +I power?
Tertiary-alkyl secondary-Alkyl primary-alkyl
I II III
The correct option is D III > I > II
We know about +I effect.
The Inductive effect is related to the ability of substituent(s) to either withdraw or donate −e density to the attached C attom. Based on this ability, the substituents are classified as −e−withdrawing (EWG) or −e−donating groups (EDG) relative to H.
EWG or −e− attracting groups are represented by -I and EDG or −e−repelling groups are represented by +I symbol.
Now, 
Here, we can see that there will be a higher negative charge on carbon in case of tertiary alkyl.
Therefore, power of +I effect will be III > II > I
III > I > II
We know about +I effect.
The Inductive effect is related to the ability of substituent(s) to either withdraw or donate −e density to the attached C attom. Based on this ability, the substituents are classified as −e−withdrawing (EWG) or −e−donating groups (EDG) relative to H.
EWG or −e− attracting groups are represented by -I and EDG or −e−repelling groups are represented by +I symbol.
Now,
Here, we can see that there will be a higher negative charge on carbon in case of tertiary alkyl.
Therefore, power of +I effect will be III > II > I
