Question

State Huckle's rule with example​

Answer 1

$\huge\underline\mathbb\purple{ANSWER:}$

$\underline{The\;Rule}--->$Huckel's Rule (4n+2 rule): In order to be aromatic, a molecule must have a certain number of pi electrons (electrons with pi bonds, or lone pairs within p orbitals) within a closed loop of parallel, adjacent p orbitals.

Notes:

German Chemist Huckel found that whether a

planar ring molecule will have aromatic properties

or not. According to Huckel's rule, a cyclic ring is aromatic if:

(i) It has (4n+2) number of π electrons, where n is a non-negative integer.

(ii) The molecule must be planar and cyclic.

________________________________________

Applications - Huckel rule is used to find whether a molecule is aromatic or not.

Example-For example, benzene C6H6 has total 6π elections.

n= 1 --->(4x1+2) π= 6π electrons and the ring is cyclic and planar.Hence, according to Huckel's rule, benzene is aromatic.

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Answer 2

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Explanation:

TheRule

−−−> Huckel's Rule (4n+2 rule): In order to be aromatic, a molecule must have a certain number of pi electrons (electrons with pi bonds, or lone pairs within p orbitals) within a closed loop of parallel, adjacent p orbitals.

Notes:

German Chemist Huckel found that whether a

planar ring molecule will have aromatic properties

or not. According to Huckel's rule, a cyclic ring is aromatic if:

(i) It has (4n+2) number of π electrons, where n is a non-negative integer.

(ii) The molecule must be planar and cyclic.

________________________________________

Applications - Huckel rule is used to find whether a molecule is aromatic or not.

Example-For example, benzene C6H6 has total 6π elections.

n= 1 --->(4x1+2) π= 6π electrons and the ring is cyclic and planar.Hence, according to Huckel's rule, benzene is aromatic.

__________________________

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