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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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Year:  1966 PT id = 1265, Type = formulation review 3D

Rare Earth Pop Out Periodic Table

From Rare Earths, The Fraternal Elements by Karl A. Gschneidner Jr., United States Atomic Energy Commission Division of Technical Information Library of Congress Catalog Card Number: 65-60546 1964; 1966 (Rev.)

There is an interesting point made in the text concerning the term "Rare Earths":

"The name rare earths is actually a misnomer for these elements are neither rare nor earths. They are metals, and they are quite abundant. Cerium, which is the most abundant, ranks 28th in the abundances of the naturally occurring elements and is more plentiful than beryllium, cobalt, germanium, lead, tin, or uranium. The least abundant naturally occurring rare earth, thulium, is more plentiful than cadmium, gold, iodine, mercury, platinum, or silver. Indeed, 25% of the elements are scarcer than thulium."

Thanks to René for the tip!

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© Mark R. Leach Ph.D. 1999 –


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