Question

what is Resonance???​

Answer 1

resonance is also called mesomerism .it yis a way of describing delocalized electrons within certain molecules or polyatomic ions where the bonding cannot be expressed by one single Lewis structure. ... An isomer is a molecule with the same chemical formula but with different arrangement in space .

(atom are delocalized it means the structure form after resonance the probability of find electronic in all carbon is same suppose in benzene structure)

Answer 2

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In physics, Resonance is the forced motion in tune with the nature oscillation frequency of a system, which is called the resonant frequency. Resonance is created when the pushing the system in the right direction that increases its amplitude. Every object has its own resonance.

Whereas...........

In chemistry, resonance is a way of describing bonding in certain molecules or 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.