Because these two Atomic orbitals are higher in energy than this molecular orbital, energy will Be lost. So, there is some change in energy that occurs when these two atomic orbitals form this molecular orbital or this molecular Diatomic molecule. Now, this energy is Released into the environment. In other words, when my two H atoms form to create a bond, energy is released. And, in fact, any time we form bonds, energy will always Be Released into the environment. So let's look at this in a more simplified fashion.