How are oxygen and
water molecules different
from argon and neon
molecules?

Argon is an element on the periodic table. It is a member of the noble gasses, meaning that it is a monoatomic pure gas. In other words, argon gas particles are simply pure single atoms of argon. ... Finally, water is a polyatomic molecule H2O composed of two atoms of hydrogen and one atom of oxygen.

Explanation:

In a dynamic equilibrium, the rates of the forward and reverse reactions remain the same.

Also, the concentrations of the reactants and products (O₂ and O₃) are constant.