For the elements K, Cl, and O in the following equations, the requirement that the number of atoms be equal on either side of the equation is met. Why is none of them an acceptable balanced equation for the decomposition of solid potassium chlorate yielding solid potassium chloride and oxygen gas?

(a) KClO₃(s) → KCl(s) + 3 O(g)

(b) KClO₃(s) → KCl(s) + O₂(g) + O(g)

(c) KClO₃(s) → KClO(s) + O₂(g)