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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 1942:

1942   Seaborg's Periodic Table of 1942
1942   Paneth's Table
1942   Barber & Taylor Periodic Table
1942   Kipp (& Mazurs') Periodic Table in Style of Spiral and Plane Lemniscate


Year:  1942 PT id = 521, Type = formulation

Seaborg's Periodic Table of 1942

In his Priestly Medal Address, The Periodic Table: Tortuous Path to Man-Made Elements printed in C&EN April 16, 1979 and reprinted in Modern Alchemy: Selected Papers of Glenn T. Seaborg (1994), page 181, Glenn Seaborg describes how the extension of the PT, caused the discovery of the transuranic elements, plutonium and neptunium, resulted in a new "uranide" group.

The formulation below is the working (and at the time top-secret) formulation used by the Manhatten atomic bomb project. The Lawrence Berkeley Laboratory internal reference number for this document is XBL 798-2509.

Like the 1939 formulation, XBL 769-10601, the formulation below erroneously predicts positions for the heaviest elements:

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Year:  1942 PT id = 565, Type = formulation data

Paneth's Table

Published by Paneth in 1942 in an article in Nature in which he suggests that newly discovered elements such as Z = 43 should be given names by their discoverers. The other highlighted elements (below) had also not yet been named.

Element 43 had been discovered 9 years earlier but had not been given an official name because there was reluctance to consider synthetic elements on the same footing as naturally occurring ones. This changed as a result of Paneth's article.

For more information see Eric Scerri's, A Tale of Seven Elements, OUP, 2013.

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

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Year:  1942 PT id = 762, Type = formulation

Barber & Taylor Periodic Table

The periodic table that appears on the inside of the front cover of: Barber, H.H., Taylor, T.I. Semimicro Qualitative Analysis, Harper, 1942. Click here for a larger version.

Conal Boyce writes:

"This is actually the Gardner/Mazzucchelli 1930 formulation, a colored version can be found here in the database. The periodic table below is found on the inside cover of Barber & Taylor's Semimicro Qualitative Analysis (1953[1942]), it is printed without attribution or source. Thanks to Philip Stewart for identifying the source.":

Thanks to Conal for the tip!

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Year:  1942 PT id = 1081, Type = formulation spiral

Kipp (& Mazurs') Periodic Table in Style of Spiral and Plane Lemniscate

Kipp, Friedrich, and Edward G. Mazurs. "Periodic Table in Style of Spiral and Plane Lemniscate". Glass, circa 1942–1957. Edward G. Mazurs Collection of Periodic Systems Images, Box 1. Science History Institute, Philadelphia. https://digital.sciencehistory.org/works/nz806022g

Periodic table in style of spiral and plane lemniscate 1942 (Original design) circa 1957 (Date attributed to slide).

This table was originated by Friedrich Kipp in 1942 and classified by chemist Edward G. Mazurs as Type IIB2-2 in his seminal work Types of Graphic Representation of the Periodic System of Chemical Elements (1957).A version of this table appears as Figure 49 on page 122 of Mazurs' 1957 publication.

Thanks to Dhr. J.G. van Gils for the tip!

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What is the Periodic Table Showing? Periodicity

© Mark R. Leach Ph.D. 1999 –


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