Periodic Table of Atomic Orbital Energies

What are they?

These are the energies of valence atomic orbitals in the elements. They were found using Photoelectron Spectroscopy, which measures the energy needed to ionize electrons from atoms in the gas phase.

What are they good for?

Usually we use these to make MO diagrams. They tell us the relative energies of the AOs that we start with. You can also look at the periodic trends, etc. The lowest value is the same as the first ionization energy.

Creative Commons License
This work is licensed under a Creative Commons Attribution 4.0 International License.
Last modified: Thu May 8 22:34:48 KST 2014