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Question

Name the ions that obey Huckel Rule?


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Solution

Huckel's rule:

  • Huckel's rule is generally stated as that in order to be aromatic a molecule must have a certain number of π electrons i.e π bonds or lone pairs or lone pairs within p orbitals.
  • Also, the compounds must contain (4n+2)π electrons to be aromatic, where n=0,1,2,3 and so on.

The ions that obey Huckel Rule:

  • All the ions which obey Huckel's rule are known to be aromatic in nature.
  • These ions must have (4n+2)π electrons, to fulfill the condition of aromaticity.
  • Example: Cyclopentadienyl anion is aromatic as it has 6π electrons, obeying the Huckels rule, for which the structure can be shown as
Assertion: Cyclopentadienyl anion is aromatic in nature. Reason:  Cyclopentaddienyl anion has six `pi` electrons. - Sarthaks eConnect |  Largest Online Education Community

Hence, All the ions which are aromatic obey the Huckel rule.


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