And so far we saw that when we combine these two atomic orbitals of the one of the H atom one that's orbitals, we form something called a five bonding molecular orbital. Or simply a bonding molecular orbital. And we said that the energy of this molecular orbital, of the Bonding molecular orbital, is lower than either of the atomic orbitals from which we're forming. So, according to this diagram, we see that the y axis is energy. And so the lower we go, the less energy we have. The higher we go, the more energy we have.