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: 2006 | PT id = 20, Type = formulation |
Eric Scerri's Triad Periodic Table
Eric Scerri says, "I have recently developed a new periodic table with some very nice features. I am now shifting my allegiance from the left-step table to this one."
- New design based on the fundamental nature of triads, and on atomic number triads in particular.
- H,F,Cl is a new perfect atomic number triad not featured in the usual medium-long form table. There are also many chemical arguments for placing H among the halogens rather than the alkalis.
- Note the regularity regarding period lengths. 8, 8, 18, 18, 32, 32 ...
- All period lengths repeat without fail, unlike in the medium-long form.
- Also note the bi-lateral symmetry assuming the rare earths are given as a footnote.
Read the paper on the philosophy of science web site.
Eric Scerri, The Periodic Table: Its Story and Its Significance, Oxford University Press, 2006. Read an interview with the author, here, and a review of the book here.
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| What is the Periodic Table Showing? | Periodicity |
© Mark R. Leach Ph.D. 1999 –
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