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Among the following, which is/are correc...

Among the following, which is/are correct?

A

Both cyclopentadiencyl anion and benzene are aromatic and have the same stabilty.

B

Benzene is aromatic and more stable than cyclopentadienyl anion and it is non-aromaitic

C

Both cyclopentadienyl anion and benzene are aromatic but benzene is more stable than cyclopentadienyl anion.

D

Cyclopentadienyl anion is more stable than benzene though both are aromatic

Text Solution

Verified by Experts

The correct Answer is:
`c`

is stable (aromic) but only in comparison with the rest fo the family of anions. But this is not as stable as benzene (as it is neutral inh which all of carbon's valencies are staisfiied).
Rule: Uncharged state is more stable than charged state.
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CENGAGE CHEMISTRY-AROMATIC COMPOUNDS AND ALKYL AND ARYL HALIDES -Exercises Multiple Correct
  1. Which of the following reactions are both sterospecific and steroselec...

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  2. Which of the following reactions(s) is/are both non-sterospecific but ...

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  3. Which of the following reactions(s) is/are sterospecific but non-stero...

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  4. Which of the following reaction(s) is/are neither sterospecific nor st...

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  5. The first steps of SN^(1) and SN^(2) recatiosns are, respectively

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  6. Which of the following staements are correct about ElcB reaction ?

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  7. In which fo the following reactions is the correct major product forme...

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  8. Which of the following syntheses could not be doen without involving b...

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  9. Which of the following side chain reaction/s can be used to reduce th...

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  10. In the following reactions: Which of the following staements a...

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  11. Which are the sources of phenol?

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  12. Which contenet (s) of middle oil separate on cooling?

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  13. Sulhanillic acid at pH = 2 and 12 exists as....and migrates towards......

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  14. Consider the following reactions: I. C(2)H(5) - I + NH(3) rarr C(2) ...

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  15. In which of the above reactions does the rate fo SN^(2) reactions dec...

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  16. Consider the folliwng reactions: I. Me(3)C - Br underset(SN^(1))over...

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  17. When benzene sullphonic acid and p- nitrophenol are treated with NaHCO...

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  18. The decreasing order of pK(a) value of the folliwng is:

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  19. Among the following, which is/are correct?

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  20. Which of the following will give Hofamann alkene?

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