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Question

In Huckel's (4n + 2) π e rule for aromaticity, 'n' represents?

A
Number of carbon atoms
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B
Number of rings
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C
Whole number
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D
Fractional number (or) integer (or) zero
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Solution

The correct option is C Whole number
(4n + 2) rule is given by Huckel for checking the aromaticity of the given compounds. For a compound to be aromatic it should have (4n+2) π e. The value of n can be a whole number i.e., n = 0, 1, 2, 3....
If a compound obey the 4n+2 rule it can be a aromatic compound.

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