* Cobalt (Co) typically forms a +2 or +3 charge as a cation.

* Chlorate (ClO₃) is a polyatomic anion with a -1 charge.

To balance the charges, the correct formula should be Co(ClO₃)₂. This ensures the overall charge of the compound is neutral:

* Co²⁺ + 2(ClO₃⁻) = 0

Therefore, Co(ClO₃)₂ represents cobalt(II) chlorate.