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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 1100 Period Tables in the database:

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Periodic Table formulations from the year 1949:

1949   Pauling's Formulation
1949   Clark's Periodic Arrangement of The Elements (1949)
1949   Wringley's Lamina System
1949   Antropoff's Representation of the Periodic System Revised by Fritz Scheele
1949   Discovery of Berkelium
1949   Riggli's Volumetric Model of the Periodic Table
1949   Scherer's Student Model of Spiral Periodic Chart
1949   Catalan's Periodic System/Sistema Periodico Ampliado


1949

Pauling's Formulation

Linus Pauling borrowed von Antropoff 1926 design, without acknowledgement, for his 1949 book, General Chemistry (and subsequently in later editions of The Chemical Bond).

The periodic table below is scanned in from Pauling's The Nature of The Chemical Bond, 3rd ed., 1960:

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1949

Clark's Periodic Arrangement of The Elements

Origionally developed in 1933, the colour version of Clark's arrangement was used the the May 1949 edition of Life Magazine, part of a 16 page feature on the atom.

This periodic table formulation was the model for Longman's 1951 Festival of Britain mural. Information supplied by Philip Stewart.

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1949

Wringley's Lamina System

Wringley's lamina system of 1949 (from van Spronsen):

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1949

Antropoff's Representation of the Periodic System Revised by Fritz Scheele

Andreas von Antropoff's 1926 representation of the Periodic System, revised by Fritz Scheele in 1949, to include the lanthanides and actinides.

The table was reconstituted, using von Antropoff s colour scheme, by P J Stewart, November 2007:

Antropoff Scheele

Thanks to Philip Stewart for the tip!

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1949

Discovery of Berkelium

Bk

Berkelium, atomic number 97, has a mass of 247 au.

Synthetic radioactive element.

Berkelium was first observed in 1949 by G. Thompson, A. Ghiorso and G. T. Seaborg.

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1949

Riggli's Volumetric Model of the Periodic Table

From the Russian Book "100 Years of Periodic Law of Chemical Elements", Nauka 1969, p.87.

The caption says: "Volumetric Model of 18-period Long System of D.I.Mendeleev." after Riggli (1949).

Thanks to Larry T for the tip!

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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).

René Vernon 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 René for the tip!

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1949

Catalan's Periodic System/Sistema Periodico Ampliado

Two versions of Catalan's Periodic System/Sistema Periodico Ampliado. The first from C.E. Moore 1949, Atomic Energy Levels, National Bureau of Standards, Circular no. 467, Washington DC, vol. 1, table 25 (1949) and the second as referenced here: http://www.miguelcatalan.net/pdfs/bibliografia/biblio09.pdf.

Click on either image to enlarge:

Thanks to René for the tip!

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What is the Periodic Table Showing? Periodicity

© Mark R. Leach Ph.D. 1999 –


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