Reactivity

The video explains the concept of reactivity in substances, focusing on how the number and arrangement of electrons in an atom influence its reactivity. Atoms strive for stability by having a full outer shell of electrons. Those with one or two electrons in their outer shell, or those missing one or two, tend to gain or lose electrons easily, making them highly reactive.

What happens to atoms that have one or two outer electrons?

Why are certain elements considered highly reactive?