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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:  2011 PT id = 487

Suggested Periodic Table Up To Z ≤ 172, Based on Dirac–Fock Calculations

A suggested periodic table up to Z ≤ 172, based on Dirac-Fock calculations on atoms and ions
Pekka Pyykkö
Phys. Chem. Chem. Phys., 2011,13, 161-168
DOI: 10.1039/C0CP01575J

Extended Average Level (EAL) Dirac–Fock calculations on atoms and ions agree with earlier work in that a rough shell-filling order for the elements.

[This new] Periodic Table develops further that of Fricke, Greiner and Waber [Theor. Chim. Acta 1971, 21, 235] by formally assigning the elements 121–164 to (nlj) slots on the basis of the electron configurations of their ions. Simple estimates are made for likely maximum oxidation states, i, of these elements M in their MXi compounds:

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What is the Periodic Table Showing? Periodicity

© Mark R. Leach Ph.D. 1999 –


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