Periodic Table |
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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: 1948 | PT id = 1399, Type = formulation |
Smith's Periodic System & Occlusion
Smith DP 1948, Hydrogen in metals, University of Chicago Press, Chicago, p. xi
René Vernon, who provided this PT, comments:
- Note the modern group numbering system along the base, four decades before IUPAC mandated the 1 to 18 system.
- Be-Mg over Zn.
- The actinides as transition metals.
- The rare earth metals as collectively occupying the position under Y.
- Xenon as X.
- I presume the rare earth metals would otherwise be referred to as the D-metals.

Thanks to René for the tip!
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| What is the Periodic Table Showing? | Periodicity |
© Mark R. Leach Ph.D. 1999 –
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