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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 1898:

1898   Crookes' vis generatrix
1898   Discovery of Neon
1898   Discovery of Krypton
1898   Discovery of Xenon
1898   Discovery of Polonium
1898   Discovery of Radium


Year:  1898 PT id = 75, Type = formulation 3D

Crookes' vis generatrix

Model of Crookes’ vis generatrix of 1898, built by his assistant, Gardiner. From: Proc. R. Soc. Lond. 63, 408.

The vertical scale represents the atomic weight of the elements from H = 1 to Ur = 239.

Missing elements are represented by a white circle. Similar elements appear underneath each other:

Cutting Board

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Year:  1898 PT id = 789, Type = element

Discovery of Neon

Ne

Neon, atomic number 10, has a mass of 20.18 au.

Neon is a noble gas. It is present in the atmosphere, 1 part in 65000.

Neon was first isolated in 1898 by W. Ramsay and W. Travers.

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Year:  1898 PT id = 816, Type = element

Discovery of Krypton

Kr

Krypton, atomic number 36, has a mass of 83.798 au.

Krypton is a noble gas.

Krypton was first isolated in 1898 by W. Ramsay and W. Travers.

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Year:  1898 PT id = 834, Type = element

Discovery of Xenon

Xe

Xenon, atomic number 54, has a mass of 131.293 au.

Xenon is a noble gas.

Xenon was first isolated in 1898 by W. Ramsay and W. Travers.

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Year:  1898 PT id = 864, Type = element

Discovery of Polonium

Po

Polonium, atomic number 84, has a mass of 209 au.

Radioactive element.

Polonium was first observed or predicted in 1898 by P. and M. Curie and first isolated in 1902 by W. Marckwald.

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Year:  1898 PT id = 868, Type = element

Discovery of Radium

Ra

Radium, atomic number 88, has a mass of 226 au.

Radioactive element.

Radium was first observed or predicted in 1898 by P. and M. Curie and first isolated in 1902 by M. Curie.

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What is the Periodic Table Showing? Periodicity

© Mark R. Leach Ph.D. 1999 –


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