Assertion `:` Stability of alkene is governed by hyper conjugation
Reason `:` Hyperconjugation involves delocatisation of `sigma -` electron with `sp^(2)` hybridised orbitals.

Hyper conjugation involves overlap of the following orbitals

When (C-H)sigma electrons are in conjugation to pi bond this conjugation is known as hyperconjugation. For any compound to show hyperconjugation : (i) Compound should have one sp^(2)-hybridised carbon. (ii) alpha-carbon with respect to sp^(2) should be sp^(3) (iii) alpha-corbon should contain at least one hydrogen atom. Which of following alkenes is most stabilized?

When (C-H)sigma electrons are in conjugation to pi bond this conjugation is known as hyperconjugation. For any compound to show hyperconjugation : (i) Compound should have one sp^(2)-hybridised carbon. (ii) alpha-carbon with respect to sp^(2) should be sp^(3) (iii) alpha-corbon should contain at least one hydrogen atom. Which of following cations is hyperconjugation destabilized?

When (C-H)sigma electrons are in conjugation to pi bond this conjugation is known as hyperconjugation. For any compound to show hyperconjugation : (i) Compound should have one sp^(2)-hybridised carbon. (ii) alpha-carbon with respect to sp^(2) should be sp^(3) (iii) alpha-corbon should contain at least one hydrogen atom. Which of following alkyl benzene has maximum electron density?