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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).

   Use the drop menus or search box (below) to Select or Search the 1400 entries in the database: 

  Or, Search by Text String:       


The 10 most recent entries to the database:

1957   Mazurs: Types of graphic representation of the periodic system of chemical elements
1857   Dumas's Study of Atomic Weight ("The Equivalents of Simple Substances")
2026   Aperiodic Table
1997   The Chemical Elements: The Fascinating Story of Their Discovery and of the Famous Scientists Who Discovered Them
1936   Japanese von Antropoff Format Periodic Table
1922   Die seltenen Erden im periodischen System (The Rare Earths in the Periodic System)
2025   Emergent Helicoidal Manifold Periodic Table
1902   Armstrong's Classification of The Elements
1893   Deeley's New Diagram and Periodic Table of The Elements
1883   Gretschel & Bornemann


Year:  1957 PT id = 1410, Type = review

Mazurs: Types of graphic representation of the periodic system of chemical elements

Types of graphic representation of the periodic system of chemical elements is a 1957 self-published book by Edward G. Mazurs. The book was updated, and re-titled, to the much better known Graphic Representations of the Periodic System During One Hundred Years (University of Alabama Press) in 1974.

Wikipedia says this:

Edward G. Mazurs (1894–1983) was a chemist who wrote a history of the periodic system of the chemical elements which is still considered a "classic book on the history of the periodic table". Originally self-published as Types of graphic representation of the periodic system of chemical elements (1957), it was reviewed by the ACS in 1958 as "the most complete survey of the range of human imagination in representing graphically the Mendeleev periodic law."

Mark Leach writes:

Unfortunately, Mazurs re-draws all of the periodic tables in both his books; he adds elements that were not known at the time of formulation and sometimes takes great liberties by rotating images by 90° (without comment), including Mendeleev's formulations of 1869. His classification system is confusing. As Wikipedia says: "Mazurs's books are difficult to use because the references are divided into 146 corresponding sections, and the index refers to the types and not to pages. Nevertheless, his references are the most comprehensive and accurate ever compiled for the period covered. He cited authors writing in at least 24 languages and from fifty countries."

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Year:  1857 PT id = 1409, Type = weight

Dumas's Study of Atomic Weight ("The Equivalents of Simple Substances")

Cannizzario cited Dumas in his letter or 'Sumto' of 1858.

Annales de Chimie [3], 55 (1858), 129–210:

Page 198:

Page 200:

There is an English tranlation of the important passage from the Carmen Giunta website:

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Year:  2026 PT id = 1408, Type = formulation misc

Aperiodic Table

(Exploiting a quirk of the English language) Aperiodic Table by XKCD:

Thanks to Marcus for the tip!

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Year:  1997 PT id = 1407, Type = formulation review

The Chemical Elements: The Fascinating Story of Their Discovery and of the Famous Scientists Who Discovered Them

A book by Nechaev I. and Jenkins G., The Chemical Elements: The Fascinating Story of Their Discovery and of the Famous Scientists Who Discovered Them, Softcover, ISBN 10: 1899618112 ISBN 13: 9781899618118, Tarquin Publications, 1997.

On page 142 this periodic table formulation appears:

Thanks to Eric Scerri for the tip!
See the website EricScerri.com and Eric's Twitter Feed.

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Year:  1936 PT id = 1406, Type = formulation

Japanese von Antropoff Format Periodic Table

An interesting Japanese periodic table sent to us by Sam Kidd (link: the Virtual Museum Project) who writes:

"From 1937 and used in Japanese high schools. The periodic table uses the von Antropoff format, and aside from the element data, it also has a data about the half-lives of known radioactive isotopes, physical constants, crystal structures, and much more. Notably it has the claimed elements masurium, illinium, alabamine, and virginium listed."

Click here (or the image) to enlarge.

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Year:  1922 PT id = 1405, Type = formulation

Die seltenen Erden im periodischen System (The Rare Earths in the Periodic System)

C. Renz, "Die seltenen Erden im periodischen System," Zeitschrift für anorganische und allgemeine Chemie (ZAAC), 122, 135-45 (Jan., 1922). View the paper (in German) here.

This article addresses the challenge of placing the growing number of known rare earth elements (lanthanides) into the periodic system. Renz discusses how lower members of the rare earth family fit into the third group (Scandium, Yttrium, Lanthanum), while addressing the placement of elements like Cerium. This work was part of the ongoing effort during that era to refine the periodic table to better accommodate the lanthanide series.

Quam & Quam write:

"A suggested improvement in Mendeléeff's table, by vertical elongation, gives space to a single vertical column of all the rare-earth elements in group III, family A."

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