Internet Database of Periodic Tables
There are thousands of periodic tables in web space, but there is only one comprehensive database of periodic tables & periodic system formulations. If you know of an interesting periodic table that is missing, please contact the database curator: Dr Mark R Leach.
Use the buttons below to select from the 1000+ Periodic Tables in the database:
Wheel Structure Periodic Table
From the Science Photo Library, a computer illustration representing the periodic table of the elements as a wheel structure.
- The radiating spokes are the groups and are colour coded.
- The heights of the columns represent the elements' atomic numbers, being the numbers of protons in their nuclei. The elements in any one group share many chemical and physical properties.
- At the wheel's centre is the first element, hydrogen, (H, white).
- At the end of each spoke, the elements are unnamed, and only their atomic numbers are shown, from 110-120.
- The transition elements (upper left, orange) and the Lanthanides and Actinides (upper right) are blocks of elements with predictably varying properties.