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Sir please teach me how to draw resonance structures

Asked by 16th March 2013, 10:29 AM
Answered by Expert
Answer:
In certain cases, molecules can be represent by more than one reasonable Lewis structure that differ only in the location of ? electrons. 
Electrons in ? bonds have a fixed location and so they are said to be localised
In contrast,  ? electrons that can be drawn in different locations are said to be delocalised
Collectively these Lewis diagrams are then known as resonance structures or resonance contributors or resonance canonicals
The "real" structure has characteristics of each of the contributors, and is often represented as the resonance hybrid (think of a hybrid breed which is a mixed breed).  In a way, the resonance hybrid is a mixture of the contributors.
 

Answered by Expert 16th March 2013, 6:48 PM
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