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The INTERNET Database of Periodic Tables

There are thousands of periodic tables in web space, but this is the only comprehensive database of periodic tables & periodic system formulations. If you know of an interesting periodic table that is missing, please contact the database curator: Mark R. Leach Ph.D.

Use the drop menus below to search & select from the more than 1100 Period Tables in the database:

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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.

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© Mark R. Leach Ph.D. 1999 –

Queries, Suggestions, Bugs, Errors, Typos...

If you have any:

Queries
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please contact Mark R. Leach, the author, using mark@meta-synthesis.com

This free, open access web book is an ongoing project and your input is appreciated.