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pre 1900 formulations
1900 to 1949 formulations
1950 to 1999 formulations
2000 to 2009 formulations
Spiral formulations
3 dimensional formulations
Data mapping periodic tables
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non-chemistry periodic tables
All periodic tables

The INTERNET Database of Periodic Tables

There are hundreds of periodic tables in web space, but there is only one comprehensive database of periodic tables & periodic system formulations. If you know of an interesting periodic table that is missing, please contact the database curator: Dr Mark R Leach.

2019 has been designated the International Year of the Periodic Table as it is the 150th Anniversary of the formulation of Mendeleev's Tabelle I

 pre 1900 formulations  1900 to 1949 formulations  1950 to 1999 formulations  2000 to 2009 formulations    Spiral formulations  3 dimensional formulations
 Data mapping periodic tables  Miscellaneous periodic tables  Books and reviews  non-chemistry periodic tables      All periodic tables


The 8 Periodic Tables most recently added to the database:

2019     Stewart's Quantahedron Formulation
1949     Scherer's Student Model of Spiral Periodic Chart
1931     Le Roy's Updated Periodic Table
2019     Piguet's 3D Periodic Table
1927     Le Roy's Periodic Table
2019     NAWA's Version of Moran's Periodic Spiral
2019     Moran's Periodic Spiral (2019)
1960     International Rectifier Corporation Periodic Table


2019

Stewart's Quantahedron Formulation

From Philip Stewart, here & here, comes a three dimensional Quantahedron Formulation.

Philip writes:

"The Quantahedron is based on Tsimmerman's Adomah cube, realised in transparent plastic, in the usual order in which Z values are read, printed on separable blocks so that it can be assembled."

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1949

Scherer's Student Model of Spiral Periodic Chart

George A. Scherer, New Aids for Teaching the Periodic Law, School Science and Mathematics, vol. 49, no. 2 (1949).

Rene writes:

"This is a Left-Step periodic table with a split d-block, that can be rearranged into a cylinder. Students were expected to keep a copy of the two halves of the table in their note books, for reassembly as required. It was a clever way of introducing the 32-column form, and the transition from 2D to 3D (that faded into obscurity)":

Thanks to Rene for the tip!

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1931

Le Roy's Updated Periodic Table

Developed from Le Roy's 1927 formulation, this version appeared in an article, A modified periodic classification of elements adapted to the teaching of elementary chemistry: J. Chem. Educ., 1931, 8 (10), p 2052. DOI: 10.1021/ed008p2052.

The abstract notes that this formulation is based on the Deming PT of 1923. In the article Le Roy says that:

"this particular classification of elements has been used in connection with the elementary course in chemistry for the past three years at Doane College, and an earlier modification was used the two preceding years."

Thanks to Rene for the tip!

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2019

Piguet's 3D Periodic Table

From Claude Piguet's paper, Chimia 73 (2019) 165–172, an interesting 3D version of the standard periodic table. The text says: "Periodic table highlighting the location of Rare Earths (red ele- ments). The elements shown in blue correspond to the actinide series":

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

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1927

Le Roy's Periodic Table

R.H. LeRoy, Teaching the Periodic Classification of Elements, School Science and Mathematics 1927, 27: 793-799. This formulation thulium in group IC and has the actinides in the C groups, analogous to the lanthanides, two decades before Seaborg.

Rene adds:

"This 1927 formulation has several remarkable features. The actinides are shown in C groups, analogous to the lanthanides. {Ce, Th} and {Pr, Pa} are in groups C4, and C5, corresponding to their maximum oxidation states. The author shows {Nd, U} in group C6, which doesn't quite work since there is no Nd(VI).

"At the other end of the C groups, the author has Tm, Yb, and Lu as C3, C2, and CI, which doesn't quite work since there is no Lu(I). Nor would it work for Lr, as there is no Lr(I) as far as we know.

"Having said that, Le Roy's speculation as the existence of a transitional set of Ln/An does work (sort of) for the actinides. B-Al-Y-La-Ac are shown as main group metals; that would be consistent with their chemistry. The author refers to the noble gases as 'transitional'. The noble gases bridge the most reactive groups of elements in the periodic table – the alkali metals in group I and the halogens in group VII. That's a concept that's rarely referred to these days even though it's still quite valid.

"{Ga, In, Tl} are shown as B3 metals, falling just after {Zn,Cd, Hg} in group B2, and {Cu, Ag, Au} in group B1. That doesn't work for Ga etc.

"H is shown floating above the A elements, and in the transitional zone, with links to F and to Li.":

Thanks to John Marks for the tip, and to Rene for the comments/analysis!

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2019

NAWA's Version of Moran's Periodic Spiral

Periodic table designer Nagayasu Nawa has put his spin on Moran's Periodic Spiral:

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2019

Moran's Periodic Spiral (2019)

Jeff Moran has been working on his Periodic Spiral for more than twenty years. Here is the latest iteration, click to enlarge:

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1960

International Rectifier Corporation Periodic Table

International Rectifier Corporation was an American power management technology company manufacturing analog and mixed-signal ICs, advanced circuit devices, integrated power systems, and high-performance integrated components for computing. It is now part of Infineon Technologies.

The periodic table below was produced in the late 1950s to early 1960s. The earliest version we can find on the web dates from 1960.

Click to enlarge.

Thanks to Rene for the tip!

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pre 1900 formulations 1900 to 1949 formulations 1950 to 1999 formulations 2000 to 2009 formulations Spiral formulations 3 dimensional formulations
Data mapping periodic tables Miscellaneous periodic tables Books and reviews non-chemistry periodic tables All periodic tables


Periodic Table, What is it showing?
Binary Compounds

© Mark R. Leach 1999-


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