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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 1300 Period Tables in the database: 

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Year:  2003 PT id = 142

Earth Scientist's Periodic Table of The Elements and Their Ions

by Bruce Railsback.

The Earth Scientist's Periodic Table of the Elements and Their Ions is a new periodic table designed to contextualize trends in geochemistry, mineralogy, aqueous chemistry, and other natural sciences. It is fundamentally different from the conventional periodic table in organizing entities by charge and consequently in showing many elements multiple times because of the multiple charges or valence states taken by those elements. These differences make the new table much more effective in showing trends and patterns in geochemistry, mineralogy, aqueous chemistry, and other natural sciences.

Version 4.6 of this table was published in September 2003 as an article in the Geological Society of America's journal Geology and subsequently featured in several news outlets. Version 4.7 was published in May 2004 in the Geological Society of America's Map and Chart Series. Version 4.8 was released in May 2007.

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What is the Periodic Table Showing? Periodicity

© Mark R. Leach Ph.D. 1999 –


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