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| What is the Periodic Table Showing? | Periodicity |
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. The database holds information on periodic tables, the discovery of the elements, the elucidation of atomic weights and the discovery of atomic structure (and much, much more).
| Year: 2007 | PT id = 1282, Type = formulation |
Seeger-Quadbeck Periodic Table
Seeger-Quadbeck H-J 2007, World of the Elements Elements of the World, Wiley-VCH, Wienheim, inside cover.
René Vernon, who provided the graphic, writes:
"An example of a rarely seen 32-column table. The categorisation scheme is interesting.
- Hydrogen is a category of its own.
- The semimetals include selenium and astatine.
- There is no separate category for the halogen nonmetals.
- On page 100 the author refers to the inner occupation of the TM and Ln/An being particularly clear."
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| What is the Periodic Table Showing? | Periodicity |
© Mark R. Leach Ph.D. 1999 –
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