Q.

The increase in stability and decrease in energy of aromatic compounds is due to

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a

Localization of s electrons

b

Delocalization of s electrons

c

Delocalization of pi electrons

d

Localization of pi electrons

answer is D.

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Detailed Solution

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According to Huckle's rule aromatic compounds are cyclic planar compounds having (4n+2) pi delocalised electrons.

A compound with delocalized electrons is more stable than it would be if all of its electrons were localized.

The extra stability a compound gains from having delocalized electrons is called delocalization energy or resonance energy.
 

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