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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 1952:

1952   Discovery of Einsteinium
1952   Discovery of Fermium
1952   Hakala's Periodic Law in Mathematical Form
1952   Coryell's Periodic Table in Long Form

Year:  1952 PT id = 879

Discovery of Einsteinium


Einsteinium, atomic number 99, has a mass of 252 au.

Synthetic radioactive element.

Einsteinium was first observed in 1952 by A. Ghiorso et al.

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Year:  1952 PT id = 880

Discovery of Fermium


Fermium, atomic number 100, has a mass of 257 au.

Synthetic radioactive element.

Fermium was first observed in 1952 by A. Ghiorso et al.

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Year:  1952 PT id = 988

Hakala's Periodic Law in Mathematical Form

Reino Hakala published a paper, The Periodic Law in Mathematical Form, J.Phys.Chem., 1952, 56(2) 178-181. It is argued that: "Janet's [left-step] best meets these requirements".

Thanks to René for the tip!

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Year:  1952 PT id = 1054

Coryell's Periodic Table in Long Form

Charles D. Coryell The periodic table: The 6d-5f mixed transition group, J. Chem. Educ., vol. 29, no. 2, pp. 62–64 1952.

Coryell (1912–1971), was an American chemist involved in the discovery of promethium.

René Vernon writes:

"In Coryell's table, just two elements are shown as having two solid 'tie lines':

Yttrium: to La-Ac and to Lu-Ac

Silicon: to Ti-Zr-Hf and to Ge-Sn-Pb.

"These days Ti-Zr-Hf-Rf is deemed to make-up group 4 (rightly so given group 4 is the first to exhibit characteristic transition metal properties) whereas C-Si-Ge-Sn-Pb-Fl is deemed to make-up group 14.

The solid tie lines Coryell shows between Hf-Th, Ta-Pa, and W-U would now be rendered in broken form.

If Coryell's table was mapped to a 32- or 18-column form, group 3 would presumably be shown as bifurcating after Y.

The circle around indium is possibly a typo(?): indium has two stable isotopes, In-113 (4.29%) & In-115 (95.71%)... actually, In-155 has a half-life of 4.4x1014 years."

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What is the Periodic Table Showing? Periodicity

© Mark R. Leach Ph.D. 1999 –

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