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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 1100 Period Tables in the database:

  Text Search:       

Periodic Tables from the year 1961:

1961   Gamow's Wound Ribbon Periodic Table
1961   Chaverri's Tabla Periodica de Los Elementos
1961   Discovery of Lawrencium


Gamow's Wound Ribbon Periodic Table

From George Gamow's 1961 book, The Atom and Its Nucleus. There is an earlier 1948 version.

Thanks to Roy Alexander for the tip!

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Chaverri's Tabla Periodica de Los Elementos

Thanks to Eric Scerri for the tip!
See the website and Eric's Twitter Feed.

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Discovery of Lawrencium


Lawrencium, atomic number 103, has a mass of 262 au.

Synthetic radioactive element.

Lawrencium was first observed in 1961 by A. Ghiorso, T. Sikkeland, E. Larsh and M. Latimer.

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What is the Periodic Table Showing? Periodicity

© Mark R. Leach Ph.D. 1999 –

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