Periodic table of the elements
This image is color-coded to show the s, p, d, and f blocks of the periodic table.
Source
Boundless vets and curates high-quality, openly licensed content from around the Internet. This particular resource used the following sources:
"Subshells%20of%20Orbitals."
http://commons.wikimedia.org/wiki/File:Subshells_of_Orbitals.jpg
Wikimedia
CC BY-SA.
