The relative free energy for a representative reaction is shown below.

For very large systems, the relative total energies can be compared using molecular mechanics.

It can however determine the relative energy of different geometrical configurations.

- what is the relative energy per atom of interface area for each kind of bond?

For example, sighting along the C2-C3 bond in staggered butane, there are two possible relative potential energies.

The relative energy of a solid has to do with the bulk nature of the solid itself.

So we need to compare their relative energies.

The rotational levels therefore have relative energies starting with .

Secondly, the mathematical consistency condition also eliminates the relative energy in the c.m. frame.

The most important consideration in choice of dienophile is its relative orbital energies.