Question

Which of the following group shows +I effects :

(1) ― F (2) ― CHO (3) (4) ― CN​

Answer 1

Answer:

none of this show +I effect

all are electron withdrawing group so they will show -I effect

option 3 is missing

Answer 2

From the given options none shows the +I effect.

• The +I effect is shown by the compounds having alkyl groups attached to them.
• The +I effect is shown by the Electron Releasing Group(ERG).
• The -F, -CHO, and -CN is Electron Withdrawing Group (EWG).
• The Electron Withdrawing Group shows -I effect.

Hence,  -F, -CHO, and -CN show the -I effect, none of them shows the +I effect.