Problem: (a) Draw the best Lewis structure for the chlorate ion. Include any resonance structures.(b) What is the average bond order of the chlorine-oxygen bond in the molecule you drew above?

Determine the resonance structure that will contribute the most for chlorate ion (ClO₃^-) and the average bond of each O-Cl 

First, we will have to draw the Lewis Structure of ClO₃^- and follow the steps:

Step 1: Determine the central atom in this molecule.

Step 2: Calculate the total number of valence electrons present.