A methyl group attached to a carbocation stabilizes it through hyperconjugation. Hyper-conjugation involves the interaction of the electrons in the C-H sigma bonds of the methyl group with the empty p-orbital of the positively charged carbon. This delocalization of electron density stabilizes the carbocation.
List I | List II | ||
A | Down’s syndrome | I | 11th chormosome |
B | α-Thalassemia | II | ‘X’ chromosome |
C | β-Thalassemia | III | 21st chromosome |
D | Klinefelter’s syndrome | IV | 16th chromosome |