Which Carbocation is More Stable?

Answer: Regarding carbocation stability, tertiary atoms have an advantage over the secondary and primary atoms. Although both are highly reactive, the tert-butyl cation is more stable than the propane-2-yl cation. The tert-butyl carbocation (CH3)3-C+ charged ion is highly stabilised. As a result, the positive charge is stabilised to a considerable extent due to the presence of three donor methyl groups that contribute electrons. The fourth sp3 hybrid orbital comprises a single pair of electrons. Three main elements contribute to the stability of carbocations: the number of carbon atoms that share a neighboring position: primary, secondary, tertiary, and quaternary methyl (the least stable carbocation) (most stable carbocation)