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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:  1894 PT id = 797, Type = element

Discovery of Argon

Ar

Argon, atomic number 18, has a mass of 39.948 au.

Argon is a noble gas.

Argon was first isolated in 1894 by Lord Rayleigh and W. Ramsay.

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What is the Periodic Table Showing? Periodicity

© Mark R. Leach Ph.D. 1999 –


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