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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 1901:

1901   Discovery of Europium


Year:  1901 PT id = 843

Discovery of Europium

Eu

Europium, atomic number 63, has a mass of 151.964 au.

Europium was first observed or predicted in 1896 by E.-A. Demarçay and first isolated in 1901 by E.-A. Demarçay.

Chronology of chemically the splitting of ceria (mixed oxides) into the pure rare-earth metals:

From: CRC Handbook on the Physics and Chemistry of Rare Earths, Chapter 248. Accommodation of the Rare Earths in the Periodic Table: A Historical Analysis
by Pieter Thyssen and Koen Binnemans (ISBN: 978-0-444-53590-0)

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What is the Periodic Table Showing? Periodicity

© Mark R. Leach Ph.D. 1999 –


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