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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: 

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Periodic Tables from the year 1907:

1907   van den Broek's Periodic Table 1
1907   Grouping of The Elements to Illustrate Refractivity


Year:  1907 PT id = 752, Type = formulation

van den Broek Periodic Table 1

From Wikipedia: Antonius Johannes van den Broek (1870-1926) was a Dutch amateur physicist notable for being the first who realized that the number of an element in the periodic table (now called atomic number) corresponds to the charge of its atomic nucleus. The 1911 inspired the experimental work of Henry Moseley, who found good experimental evidence for it by 1913. van den Broek envisaged the basic building block to be the 'alphon', which weighed twice as much as a hydrogen atom.

Read more in Chapter 4, Antonius Van Den Broek, Moseley and the Concept of Atomic Number by Eric Scerri. This chapter can be found in the book: For Science, King & Country: The Life and Legacy of Henry Moseley (Edited by Roy MacLeod, Russell G Egdell and Elizabeth Bruton).

van den Broek's periodic table of 1907: Annalen der Physik, 4 (23), (1907), 199-203

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

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Year:  1907 PT id = 1105, Type = formulation

Grouping of The Elements to Illustrate Refractivity

From C. Cuthbertson & E. Parr Metcalfe, Part III On The Refractive Indices of Gaseous Potassium, Zinc, Mercury, Arsenic Selenium and Tellurium, Phil. Trans. A: Mathematical & Physical Sciences, vol 207, pp135–148, 1907.

René Vernon writes:

"A curious periodic table which runs from group 12 on the left to group 13 on the right (see below). It seems to have done that way to bring out the pattern in multiples of refractivities i.e. x½ x 4 x 6 x10. The border around the elements in groups 15 to K-Rb-Cs in group 1 denotes this relatively strong regularity among the refractivity values. The L for iodine is a printer's error."

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What is the Periodic Table Showing? Periodicity

© Mark R. Leach Ph.D. 1999 –


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