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According to the huckel rule, planar and...

According to the huckel rule, planar and completely conjugated monocyclic polyene is aromatic if it possesses

A

`(4n+1)pi` electrons

B

`(4n+2)pi` electrons

C

`(2n+2)pi` electrons

D

`4npi` electrons

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Verified by Experts

The correct Answer is:
B
Huckel's rule deals with compounds containing one planar ring in which each atoms has a p orbital his calculation show that planear monocyclic rings containing `(4n+2)pi` electrons, where `n=0,1,2,3`.. And so on have closed shells of delocalized `e^(-)`s like benzene.
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R SHARMA-AROMATIC HYDROCARBONS-Archives
  1. The centric formula of benzene was proposed by

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  2. The ratio of sigma and pi bond in benzene is

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  3. According to the huckel rule, planar and completely conjugated monocyc...

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  4. Select the correct statement about benzene:

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  5. Which of the following statements is not compatible with arenes?

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  6. Aromatic character of benzene can be explained by

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  7. The total number of possible isomeric trimethylbenzenes is

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

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  9. Which of the following chemical systems is/are nonaromatic?

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  10. Number of pi electrons present in naphthalene is

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  11. When sodium benzoate is heated with sodalime, the product formed is

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  12. The nitration of benzene is an example of

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  13. In the nitration of benzene with a mixture of concentrated HNO(3) and ...

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  14. When phenol is heated with zinc dust the major product formed is

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  15. Which of the following compounds is the most reactive towards nitratio...

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  16. The strongest ortho-and para-directing group among the following is

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  17. C(6)H(6)+CI(2)overset(UVLight)rarr Product In above reaction product i...

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  18. Among the compounds the order of decreasing reactivity towards electro...

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  19. The function of anhydrous AlCl(3) in friedel-Crafts' reaction is to

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  20. Benzene reacts with n-propyl chloride in the presence of anhydrous AlC...

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