11th Class Chemistry Hydrocarbons

  • question_answer 25) What are necessary conditions for any system to be aromatic?

    Answer:

    The necessary conditions for a system to be aromatic are: (i) Aromatic compounds are cyclic. (ii) These compounds have conjugated \[\pi \]-bonds. (iii) Aromatic rings are planar. (iv) According to Huckels rule, the aromatic compounds must have \[(4n+2)\]\[\pi \] electrons in the ring system. Where n =1, 2, 3.... Example:  


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