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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: 

  Text Search:       

Year:  1984 PT id = 924

Arabic Periodic Tables

From Arabic introductory text published by the Royal Scientific Society, Amman, Jordan, 1984. Jeries A. Rihani, who provided the two images, writes:

"The first image shows a periodic table similar to that of the Janet left-step periodic table, but in an upside-down flipped format.The second image displays the comparative energy levels of orbitals of atoms of many electrons."

Thanks to Jeries A. Rihani for the tip! 

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What is the Periodic Table Showing? Periodicity

© Mark R. Leach Ph.D. 1999 –

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