The allegory not only draws on the theory of forms, but it is connected both to the concept of forms and Plato's theory of the stages of life. 1  At the lowest stage, the cognitive stage of imagination (in Greek, eikasia), the prisoners exist bound and hindered in their perspective.
Since any orbital can hold a maximum of two electrons, the bonding orbital in H 2 + is only half-full. This single electron is nevertheless enough to lower the potential energy of one mole of hydrogen nuclei pairs by 270 kJ quite enough to make them stick together and behave like a distinct molecular species.
Molecular Orbitals of the Second Energy Level. The 2 s orbitals on one atom combine with the 2 s orbitals on another to form a 2s bonding and a 2s * antibonding molecular orbital, just like the 1s and 1s * orbitals formed from the 1 s atomic orbitals.