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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 1300 Period Tables in the database: 

  Text Search:       


Periodic Tables from the year -5000:

5000 BCE   Discovery of Iron
5000 BCE   Discovery of Silver


Year:  5000 BCE PT id = 806

Discovery of Iron

Fe

Iron, atomic number 26, has a mass of 55.845 au.

Iron had its earliest use in about 5000 BCE, and the oldest sample dates from 4000 BCE from Egypt.

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Year:  5000 BCE PT id = 827

Discovery of Silver

Ag

Silver, atomic number 47, has a mass of 107.868 au.

Silver had its earliest use in about 5000 BCE, and the oldest sample dates from 4000 BCE, and is from Asia Minor.

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What is the Periodic Table Showing? Periodicity

© Mark R. Leach Ph.D. 1999 –


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