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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 1952:

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


1952

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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1952

Discovery of Einsteinium

Es

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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1952

Discovery of Fermium

Fm

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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1952

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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