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Carbon-carbon double bond lenghth will b...

Carbon-carbon double bond lenghth will be maximum in which of the following compounds ?

A

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

B

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

C

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

D

`CH_(2)=CH_(2)`

Text Solution

Verified by Experts

The correct Answer is:
c
has highest C- C bond length (B.L) , Because it has maximum hyperconjugation .
More single bond character by hyperconjugation.
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DISHA PUBLICATION-ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES -Exercise - 1 : Concept Builder (Topicwise) TOPIC 3 : Concepts of Reaction Mechanism in Organic Compounds and Purification
  1. In which of the following pairs A is more stable than B ?

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  2. Which of the following has the highest nucleophilicity ?

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  3. The increasing order of the boiling points for the following compound ...

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  4. Which of the following compouns has most acidic hydrogen ?

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  5. Polarization of electrons in acrolein may be written as:

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  6. Identify most acidic hydrogen present in the above compound :

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  7. Of the following compounds, which will have a zero dipole moment ?

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  8. Which statement is incorrect in respect of the above reaction ?

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  9. Carbon-carbon double bond lenghth will be maximum in which of the foll...

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  10. The structure of CH(2)=C=CH(2) is :

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  11. Which of the following will show aromatic behaviour ?

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  12. Which of the following reactions cannot proceed by S(N)1 mechaism ?

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  13. Ketene CH2=C=O has

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  14. Which one of the following does not have sp^(2) hybridised carbon ?

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  15. How many pi - bonds are present in naphthalene ?

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  16. The shape of methyl carbanion is similar to that of -

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  17. Which of the following represents the correct order of stability of ca...

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  18. Which one of the following is most reactive towards electrophilic reag...

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  19. The pair of electron in the given carbanion, CH(3)C -= C^(Θ), is prese...

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  20. The major product of dehydraction of the following

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