(b)
Aryl carbonium ions are more stable than alkyl carbonium ions. The order of stability of carbocation is
Triphenyl methyl >Diphenyl methyl> Benzyl>Allyl>3${^\circ}$>2${^\circ}$>1${^\circ}$> methyl carbocation.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.