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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 1766:

1766   Discovery of Hydrogen


Year:  1766 PT id = 781

Discovery of Hydrogen

H

Hydrogen, atomic number 1, has a mass of 1.008 au.

Hydrogen is the lightest element and by far the most abundant element in the universe: it makes up about about 90% of the universe by weight. Under standard conditions, hydrogen exists as a diatomic molecular gas, H2.

Hydrogen was first isolated and identified as an element in 1766 by H. Cavendish, although it was first made in 1500 by Paracelsus.

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What is the Periodic Table Showing? Periodicity

© Mark R. Leach Ph.D. 1999 –


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