Mesomeric effect

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Notion

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Science and technology

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What Wikipedia says

In chemistry, the mesomeric effect (or resonance effect) is a property of substituents or functional groups in a chemical compound. It is defined as the polarity produced in the molecule by the interaction of two pi bonds or between a pi bond and lone pair of electrons present on an adjacent atom.

Excerpt from the Wikipedia article “Mesomeric effect”, under the CC BY-SA 4.0 license. Read the article on Wikipedia