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:
Alexander Arrangement Unwrapped... and Rewrapped
In mid-2019 Roy Alexander – of the Alexander Arrangement – produced an intriguing new formulation in sketch form that shows the p, d & f blocks moving away from the s block in three dimensional space:
Roy has now expanded this into a full blown new formulation. (Click image to enlarge):
© Mark R. Leach 1999-
Queries, Suggestions, Bugs, Errors, Typos...
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This free, open access web book is an ongoing project and your input is appreciated.