Question

Arrange the following carbocations in increasing order of stability and mention basis of the order suggested
(i) `overset(o+)(C)H_(3)" "`(ii) `CH_(3)overset(o+)(C)H_(2)" "`(iii) `CH_(3)overset(o+)(C)HCH_(3)" "`(iv) `CH_(3)-underset(CH_(3))underset(|)overset(o+)(C)-CH_(3)`

Answer 1

The increasing order of stability is explained on the basis of hyper conjugation which depends upon the number of `alpha`-hydrogen atoms attached to the carbon atoms linked with positively charged carbon atom. More tha number of `alpha`-hydrogen atoms present, greater is the stability of the carbocation.
`{:(" "CH_(3)),(" |"),(overset(o+)(C)H_(2) lt CH_(3)overset(o+)(C)H_(2) lt CH_(3)-overset(o+)(C)H lt CH_(3)-C^(o+)),(" |"" |"),(" "CH_(3)" "CH_(3)),("(nil)"" (three)"" (six)"" (nine)"):}`