Answer:
Sodium is a very reactive metal; it is, in fact, second in the reactivity table of elements. Sodium is so reactive due to two main factors. Firstly, the Sodium atom has a large amount of rings, so the nuclear bonds on the outer layers are weaker than those nearer to the nucleus. The second factor is that, like all Alkaline Earth Metals, sodium only has a single electron in its outer shell, making it extremely reactive. The only stable metal that is more reactive than sodium is Potassium.