Write note on: Huckel's rule
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In 1931, German chemist and physicist Erich Hückel proposed a rule to determine if a planar ring molecule would have aromatic properties. This rule states that if a cyclic, planar molecule has 4n+2π electrons, it is aromatic. This rule would come to be known as Hückel's Rule.
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In 1931, German chemist and physicist Erich Hückel proposed a rule to determine if a planar ring molecule would have aromatic properties. This rule states that if a cyclic, planar molecule has 4n+2π electrons, it is aromatic. This rule would come to be known as Hückel's Rule.
In order to be aromatic, a molecule must have a certain number of pi electrons within a closed loop of parallel, adjacent p orbitals. The pi-electron count is defined by the series of numbers generated from 4n+2 where n = zero or any positive integer (i.e., n = 0, 1, 2, etc.). This rule is known as Huckel's rule.