Question

What are resonance structures?

Answer 1

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:

`"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.