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In chemistry, resonance, also called mesomerism, is a way of describing bonding in certain molecules or polyatomic ions by the combination of several contributing structures (or forms, also variously known as resonance structures or canonical structures) into a resonance hybrid (or hybrid structure) in valence bond theory.
In chemistry, resonance, also called mesomerism, is a way of describing bonding in certain molecules or polyatomic ions by the combination of several contributing structures into a resonance hybrid in valence bond theory.
Jan 30, 2023 · Resonance is a way of describing delocalized electrons within certain molecules or polyatomic ions where the bonding cannot be expressed by a single Lewis formula. A molecule or ion with such delocalized electrons is represented by several resonance structures.
Some molecules have two or more chemically equivalent Lewis electron structures, called resonance structures. Resonance is a mental exercise and method within the Valence Bond Theory of bonding that describes the delocalization of electrons within molecules.
About. Transcript. Resonance arises when more than one valid Lewis structure can be drawn for a molecule or ion. The overall electronic structure of the molecule or ion is given by the weighted average of these resonance structures and is referred to as the resonance hybrid. Created by Sal Khan. Questions. Tips & Thanks.
Jun 2, 2024 · Resonance is an imaginary concept developed to explain the unexceptional stability of some molecules. It is the wandering of pi electrons within a molecule. Physics
theory of resonance, in chemistry, theory by which the actual normal state of a molecule is represented not by a single valence-bond structure but by a combination of several alternative distinct structures.
Resonance is a molecule's way of spreading out its electron density, and that helps to minimize its ground-state energy. We as chemists draw so-called resonance structures to depict each possible snapshot of the molecule that contribute to the overall observed resonance hybrid structure. Consider acetate anion and the allyl carbocation:
The two oxygens are both partially negative, this is what the resonance structures tell you! While both resonance structures are chemically identical, the negative charge is on a different oxygen in each. This is important because neither resonance structure actually exists, instead there is a hybrid.
Resonance is the phenomenon which causes a polarity to be produced in the molecule. This could happen either by the interaction of two π-bonds or between a π-bond and lone pair of electrons present on an adjacent atom. The delocalisation of π-electrons is what causes this effect.
