1. Periodic Table Web Elements
By Jason Houpt
1st Hour

2. Hydrogen
Hydrogen was discovered by Henry Cavendish at 1766 in London, England. Origin of name: from the Greek words "hydro" and "genes" meaning "water" and "generator".

3. Sodium
Sodium was discovered by Sir Humphrey Davy at 1807 in England. Origin of name: from the English word "soda" (the origin of the symbol Na comes from the Latin word "natrium").

4. Bromine
Bromine was discovered by Antoine-J. Balard at 1826 in France. Origin of name: from the Greek word "bromos" meaning "stench".

5. Astatine
Astatine was discovered by Dale Corson, MacKenzie, Segre at 1940 in California, USA. Origin of name: from the Greek word "astatos" meaning "unstable"

6. Francium
Francium was discovered by Marguerite Perey at 1939 in France. Origin of name: named after "France".

7. Roentgenium
Roentgenium was discovered by S. Hofmann, V. Ninov, F. P. Hessberger, P. Armbruster, H. Folger, G. Münzenberg, and others at 1994 in Gesellschaft für Schwerionenforschung (GSI) in Darmstadt, Germany.. Origin of name: the proposed name roentgenium has yet ot be accepted formally, but lies within the long established tradition of naming elements to honour famous scientists. Wilhelm Conrad Roentgen discovered X-rays in 1895.

8. Holmium
Holmium was discovered by J. L. Soret and Delafontaine at 1878 in Switzerland. Origin of name: from the Greek word "Holmia" meaning "Sweden".

9. Polonium
Polonium was discovered by Marie Curie at 1898 in France. Origin of name: named after "Poland" (birthplace of Marie Curie)

10. Barium
Barium was discovered by Sir Humphrey Davy at 1808 in England. Origin of name: from the Greek word "barys" meaning "heavy".

11. Molybdenum
Molybdenum was discovered by Carl William Scheele at 1781 in Sweden. Origin of name: from the Greek word "molybdos" meaning "lead".

12. Gallium
Gallium was discovered by Paul-Emile Lecoq de Boisbaudran at 1875 in France. Origin of name: from the Latin word "Gallia" meaning "France" and perhaps also from the Latin word "gallus", (the cock, a translation of Lecoq, the discoverer of gallium).

13. Actinium
Actinium was discovered by Andre Debierne at 1899 in France. Origin of name: from the Greek word "aktinos" meaning "ray".

14. Seaborgium
Seaborgium was discovered by Albert Ghiorso and others at 1974 in The Lawrence Berkeley Laboratory in California and the Livermore National Laboratory, USA.. Origin of name: Glenn T. "Seaborg", American nuclear chemist and Nobel prize winner.

15. Thallium
Thallium was discovered by Sir William Crookes at 1861 in England. Origin of name: from the Greek word "thallos" meaning "green twig" or green shoot.

16. Einsteinium
Einsteinium was discovered by Workers at Argonne, Los Alamos, USA, and the University of California at Berkeley, USA. at 1952 in USA. Origin of name: named after "Albert Einstein".

17. Hassium
Hassium was discovered by Peter Armbruster, Gottfried Münzenber and their co-workers. at 1984 in Gesellschaft für Schwerionenforschung (GSI) in Darmstadt, Germany. Origin of name: the origin of the name is the Latin word "Hassias" meaning "Hess", the German state.

18. Potassium
Potassium was discovered by Sir Humphrey Davy at 1807 in England. Origin of name: from the English word "potash" (pot ashes) and the Arabic word "qali" meaning alkali (the origin of the symbol K comes from the Latin word "kalium").

19. Cadmium
Cadmium was discovered by Friedrich Strohmeyer at 1817 in Germany. Origin of name: somewhat confusingly, from the Latin word "cadmia" meaning "calamine" (zinc carbonate, ZnCO3) and from the Greek word "kadmeia" with the same meaning.

20. Aluminum
Aluminum was discovered by Hans Christian Oersted at 1825 in Denmark. Origin of name: from the Latin word "alumen" meaning "alum".

21. Thulium
Thulium was discovered by Per Theodore Cleve at 1879 in Sweden. Origin of name: named after ""Thule", an ancient name for Scandinavia.

22. Zirconium
Zirconium was discovered by Martin Heinrich Klaproth at 1789 in Berlin, Germany. Origin of name: from the Arabic word "zargun" meaning "gold color".

23. Lithium
Lithium was discovered by Johan August Arfvedson at 1817 in Stockholm, Sweden. Origin of name: from the Greek word "lithos" meaning "stone", apparently because it was discovered from a mineral source whereas the other two common Group 1 elements, sodium and potassium, were discovered from plant sources.

24. Indium
Indium was discovered by Ferdinand Reich, Hieronymus Theodor Richter at 1863 in Germany. Origin of name: named after the indigo line in its atomic spectrum

25. Dysprosium
Dysprosium was discovered by Paul Emile Lecoq de Boisbaudran at 1886 in France. Origin of name: from the Greek word "dysprositos" meaning "hard to obtain".

26. Gold
Gold was discovered by Known since ancient times. at no data in not known. Origin of name: from the Anglo-Saxon word "gold" (the origin of the symbol Au is the Latin word "aurum" meaning "gold").