
The INTERNET Database of Periodic Tables
There are hundreds 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.
2014 Lado's Periodic Table Series Analysis
By Solomon F Lado, a mathematical analysis.
Abstract (full paper):
"There is a periodic table, at least in terms of atomic number and electronic configuration, for every positive integer, c >= 2, with a capacity of 20c^{2} – 21c + 1 elements, where c is the construction index, and c equals one plus the maximum number of electrons per orbital of an atom. The cconstruction index and the cconstructionindex formulae are unique to this report. The maximum number of potential orbitals per subshell of an atom = 3^{n1} where n is the index of the s, p, d, and f subshells":
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Periodic Table, What is it showing? 
Binary Compounds

© Mark R. Leach 1999
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