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: Dr Mark R Leach.
Use the buttons below to select from the 1000+ Periodic Tables in the database:
Discovery of Chromium
Chromium, atomic number 24, has a mass of 51.996 au.
Chromium was first observed or predicted in 1797 by N. Vauquelin and first isolated in 1798 by N. Vauquelin.
© Mark R. Leach 1999-
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