What are resonance structures?

Jun 24, 2018

SEe below

Explanation:

Resonance is the delocalisation of $\pi$ electrons in a conjugated system.The different structures formed by resonance are called resonating structure or canonical forms and the equivalent structure formed represents the actual structure of a molecule.

Resonance occurs in a conjugated system only and it occurs to stabilize the system as:

$\text{Number of resonating structures " prop " Stability of compound}$
A conjugated system is formed by alternate $\pi$ - $\pi$ or $\pi$ electrons with negative charge or $\pi$ electrons with positive charge, etc.