The Reactivity Series of Metals Towards Oxygen The reactivity of metals differs from one metal to another. In fact, the form in which a metal occurs in nature depends on its reactivity. Gold has very low reactivity and therefore can be found in its metallic state in nature. Aluminium, potassium and sodium have very high reactivity, and therefore exist as … [Read more...] about The Reactivity Series of Metals Towards Oxygen