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Which of the followin is the resonance h...

Which of the followin is the resonance hybrid of benzene?

A

B

C

D

Both (1) and (3)

Text Solution

Verified by Experts

The correct Answer is:
B

Structures (1) and (3) are the kekule resonance structures. The resonance hybrid has only one C- to -C bond length and bond energy. This length is intermediate between that of a single and double bond. The hypothetical cyclohexatriene or would have two different alternating C-C and `C=C` bond length with different bond energies The hybrid is more stable and hence less reactive than the hypothetical cyclohexatriene.
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R SHARMA-AROMATIC HYDROCARBONS-Question Bank
  1. The benzene molecule possesses

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  2. Which of the followin groups is called benzo?

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  3. Which of the followin is the resonance hybrid of benzene?

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  4. How many sigma and pi bonds are present in a benzene molecule?

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  5. One mole of benzene is treated with an excess of ozone and the product...

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  6. Benzene's extraordinary stability is related to

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  7. Hyckel's number for benzene is

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  8. Which of the following shows that benzene differs chemically from an o...

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  9. Benzene forms a single C(6)H(5)Br product when it is monobrominated be...

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  10. How many pi electrons are present in the cyclopentadienyl anion C(5)H(...

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  11. What is the correct decreasing order of resonance energies stabilities...

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  12. Which of the following isomers of benzene has sixx equivalent H atoms?

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  13. Thre resonance energy of benzene is approximately

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  14. How many trichloro derivatives of benzene are possible?

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  15. How many trinitrotoluenes are possible?

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  16. Which of the followngis incorrect?

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  17. Which of the following molecules shows aromatic character?

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  18. Benzene reacts with methyl chloride in the presence of anhydrous alumi...

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  19. In the sulphonation of benzene, the active electrophilic species is

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  20. Benzne can be obtained by heating either benzoic acid with X or phenol...

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