Internet Database of Periodic Tables
There are thousands of periodic tables in web space, but there is only one 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 Nihonium
Nihonium, atomic number 113, has a mass of 284 au.
Synthetic radioactive element.
Nihonium was first observed in 2003 by Y. Oganessian et al. and K. Morita et al.
© Mark R. Leach 1999-
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