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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:  1994 PT id = 1016

f-Block Elements 3D Periodic Table

From conference in Helsinki on the f-Block Elements to commemorate the bicentennial of Johan Gadolin's 1794 analysis of Yittria.

Pekka Pykkö writes to say:

"We used [this formulation] in Helsinki in 1994 on the cover of ICFE-2 conference proceedings. Who invented it or where it was copied from, I do not know. Anyway, all the hundreds of participants received it from us":

Claude Piguet's paper, Chimia 73 (2019) 165–172, also uses this 3D version of the standard periodic table. The text says: "Periodic table highlighting the location of Rare Earths (red elements). The elements shown in blue correspond to the actinide series":

Thanks to Eric Scerri for the tip!
See the website and Eric's Twitter Feed.

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What is the Periodic Table Showing? Periodicity

© Mark R. Leach Ph.D. 1999 –

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