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The delocalisation of sigma electrons wi...

The delocalisation of `sigma` electrons with P-orbital is known as Hyperconjugation. It is also known as `sigma-pi` conjugation 'or' No bond resonance. Presence of atleast one `'alpha'` hydrogen at saturated carbon in an alkene, carbocation and free radical involves hyper conjucation. More is the no. of hyper conjugative structures more stable is the alkene. Bond lengths, dipolemoments are also effected by hyperconjugation.
Which of the following molecule has longest C = C bond length

A

`CH_(3)-underset(underset(CH_(3))(|))overset(overset(CH_(3))(|))(C)-CH=CH_(2)`

B

`CH_(3)-CH=CH_(2)`

C

`CH_(3)-overset(overset(CH_(3))(|))(C)=underset(underset(CH_(3))(|))(C)-CH_(3)`

D

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The correct Answer is:
C
12 Hyper conjugative structures
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The delocalisation of sigma electrons with P-orbital is known as Hyperconjugation. It is also known as sigma-pi conjugation 'or' No bond resonance. Presence of atleast one 'alpha' hydrogen at saturated carbon in an alkene, carbocation and free radical involves hyper conjucation. More is the no. of hyper conjugative structures more stable is the alkene. Bond lengths, dipolemoments are also effected by hyperconjugation. Hyper conjugation involves the

The delocalisation of sigma electrons with P-orbital is known as Hyperconjugation. It is also known as sigma-pi conjugation 'or' No bond resonance. Presence of atleast one 'alpha' hydrogen at saturated carbon in an alkene, carbocation and free radical involves hyper conjucation. More is the no. of hyper conjugative structures more stable is the alkene. Bond lengths, dipolemoments are also effected by hyperconjugation. No bond resonance is not possible in

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In which of the following molecule sp^2- sp^2 sigma bond is present ?

Arrange the following decreasing order of hyper conjugative structures

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The kind of delocalization involving sigma bond orbitals is called

Which of the following has maximum number of hyper conjugative structures?

Which of the following represents the hyperconjugation effect ?

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