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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: 

  Text Search:       

Periodic Tables from the year 1995:

1995   Chemical Helix Periodic Table
1995   Live! Periodic Table
1995   Melinda Green's Periodic Fractal of The Elements
1995   Klein's Periodic Table of The Elements
1995   Considine's Polar Periodic Table

Year:  1995 PT id = 45

Helical Periodic Table

Tarquin Publications sell a make-your-own three dimensional, helical periodic table.

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Year:  1995 PT id = 118

Periodic Table Live!

A good site with lots of infomation, pictures & video clips, here:

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Year:  1995 PT id = 241

Melinda Green's Periodic Fractal of The Elements

Melinda Green writes: "This is an alternative version of the standard chemistry Periodic Table of the Elements that I developed. In high school I learned the basic concept of element families and how they were arranged into columns to show the periodicity in their electrical properties. I was fascinated with the idea, but immediately wondered whether there might be better ways of graphically showing those relationships." read lots more here

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Year:  1995 PT id = 1130

Klein's Periodic Table of The Elements

Klein DJ, Similarity and Dissimilarity in Posets, Journal of Mathematical Chemistry, 18(2), 321–348 (342) (1995)

The relevance of partially ordered sets (or posets) in a wide diversity of contexts in chemistry is emphasized, and the utility of distance functions (or metrics) on such posets is noted. First a notion of "scale similarity" is introduced to make comparisons within certain so-called "scaled" posets, for which there is formulated natural "comparators", which in turn lead to associated distance functions. Beyond taking note of several chemically relevant examples of these "scaled" posets and their consequent associated similarity measures, a second chemically relevant class of so-called "shifted" posets is similarly developed, with examples. Even further extension of some aspects of the current approach is indicated, and finally the multi-posetic character of chemical periodic law is suggested.

Thanks to René for the tip!

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Year:  1995 PT id = 1292

Considine's Polar Periodic Table

From: Considine DM (ed.) 1995, Van Nostrand’s Encyclopedia of Science, 8th ed. New York, p. 2376

René Vernon writes:

"A nice design but of quite limited practical utility for quick reference or detailed chemical analysis."

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What is the Periodic Table Showing? Periodicity

© Mark R. Leach Ph.D. 1999 –

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