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: 2010 | PT id = 1195, Type = formulation data |
Schwarz & Rich's Periodic Table
W. H. Eugen Schwarz & Ronald L. Rich, Theoretical Basis and Correct Explanation of the Periodic System: Review and Update, J. Chem. Educ. 2010, 87, 4, 435-443. DOI: https://doi.org/10.1021/ed800124m
Periodic table, representing some aspects of the periodic system of chemical elements (mainly to support the discussions in [the attached] article, perhaps not for the classroom):
- Element symbol and element number Z = 0 – 118
- Period number n
- Group number G, related to the number of valence electrons
- Typical electronic valence configuration of the bound atoms ("neighbour configurations" such as s1p3 instead of s2p2 may be more important for some atoms in the group)
- Characteristic valence orbitals of highest angular momentum
- Chemical group name
- (Elements that do not belong to the group are put in parentheses.)
- The dashed lines indicate alternative or controversial group assignments, they are not meant to represent the authors' views.
Note that the richness of chemistry sometimes prevents clear-cut classifications and assignments.

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| What is the Periodic Table Showing? | Periodicity |
© Mark R. Leach Ph.D. 1999 –
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