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Aromaticity - Practice Questions & MCQ

Updated on Sep 18, 2023 18:35 AM | #JEE Main

Quick Facts

  • 35 Questions around this concept.

Solve by difficulty

Which of the following is most stable?

Which among the following is the strongest acid?

Identify A in the given chemical reaction:

Which is a non-benzenoid aromatic compound?

Which of the following is not an example of benzenoid compound? 

Which of the following compounds is not aromatic ?

Which of the following molecule/species is most stable?

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Which of the following are aromatic?

Which of the following molecules is the least resonance stabilized?

 

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Which of the following compounds is aromatic alcohol?

 

Concepts Covered - 1

Aromaticity

Aromaticity is defined as "An aromatic compound having a cyclic planar structure with (4n+2)\mathrm{\pi} electrons and have high resonance energy and stability due to delocalization of \mathrm{\pi} electrons." Any compound is aromatic if the following conditions are fulfilled:

  • It has complete delocalization of \mathrm{\pi} electrons.
  • Has a high resonance energy.
  • Has a conjugate system.
  • Has number of \mathrm{\pi} electrons according to 4n +2 or Huckel's rule that is, 2,6,10,14,18. Here, n = 0,1,2 ....
  • If number of \mathrm{\pi} electrons 4 "n' i.e., 4, 8, 12, 16, it will be anti-aromatic.
  • If any of these conditions is not obeyed it will be non-aromatic.

Some example of aromatic compound include

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Aromaticity

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Aromaticity

Chemistry Part II Textbook for Class XI

Page No. : 399

Line : 47

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