Question

Peroxide effect is observed with the addition of $HBr$ but not with the addition of $HI$ to unsymmetrical alkene because

• A. H-l bond is stronger that H-Br and is not cleaved by the free radical
• B. H-l bond is weaker than H-Br bond so that iodine free radicals combine to form iodine molecules
• C. Bond strength of HI and HBr are same but free radicals are formed in HBr
• D. All of these

Answer 1

Answer: (B)

Due to free radical mechanism (secondary free radical)