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 (Compound) | List-II (Uses) |
---|---|
(A) Iodoform | (I) Fire extinguisher |
(B) Carbon tetrachloride | (II) Insecticide |
(C) CFC | (III) Antiseptic |
(D) DDT | (IV) Refrigerants |
List I | List II | ||
---|---|---|---|
A | Mesozoic Era | I | Lower invertebrates |
B | Proterozoic Era | II | Fish & Amphibia |
C | Cenozoic Era | III | Birds & Reptiles |
D | Paleozoic Era | IV | Mammals |