Question

Why do electrons go from a higher energy state to a lower energy state when a chemical bond is formed?

Answer 1

This is because energy is released in the formation of chemical bonds.

Explanation:

Before a chemical bond is formed, the involving elements or atoms either release or absorb energy. And because low energy compounds are pretty stable, the elements give out a lot of energy in order to achieve stability. This also explains why low energy compounds are more stable than those with higher energies.