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Resources: Periodic table ›› A list of who discovered each element

A list of who discovered each element

Below is a list of all of the known elements, who they were discovered by and the year they were discovered. Some elements, such as gold, silver and iron, have been known since ancient times, so it is impossible to credit a single person for their discovery. Other elements were discovered around the same time by two or more scientists who were working independently of each other. In these cases, each scientist is listed along with the year they made their discovery. Other elements were discovered by teams of scientists working together. In cases like this, the known members of the team are listed along with a single year of discovery. Click on an element's name for the full story!

Element name	Discovered by	Year
Actinium	Andre-Louis Debierne	1899
Aluminum	Hans Christian Oersted	1825
Americium	Glenn T. Seaborg Ralph A. James Leon O. Morgan Albert Ghiorso	1944
Antimony	Known since ancient times	?
Argon	Sir William Ramsay Lord Rayleigh	1894
Arsenic	Known since ancient times	?
Astatine	Dale R. Carson K.R. MacKenzie Emilio Segre	1940
Barium	Sir Humphry Davy	1808
Berkelium	Stanley G. Thompson Glenn T. Seaborg Kenneth Street, Jr. Albert Ghiorso	1949
Beryllium	Louis-Nicholas Vauquelin	1798
Bismuth	Claude Geoffroy the Younger	1753
Bohrium	Scientists at Dubna, Russia	1976
Boron	Joseph-Louis Gay-Lussac Louis-Jaques Thenard Sir Humphry Davy	1808 1808
Bromine	Antoine-Jerome Balard	1826
Cadmium	Friedrich Strohmeyer	1817
Calcium	Sir Humphry Davy	1808
Californium	Stanley G. Thompson Glenn T. Seaborg Kenneth Street, Jr. Albert Ghiorso	1950
Carbon	Known since ancient times	?
Cerium	Jons Jacob Berzelius Wilhelm von Hisinger Martin Heinrich Klaproth	1803 1803
Cesium	Robert Wilhelm Bunsen Gustav Robert Kirchoff	1860
Chlorine	Carl Wilhelm Scheele	1774
Chromium	Louis-Nicholas Vauquelin	1797
Cobalt	Georg Brandt	1739
Copper	Known since ancient times	?
Curium	Glenn T. Seaborg Ralph A. James Albert Ghiorso	1944
Darmstadtium	Peter Armbruster Gottfried Munzenber	1994
Dubnium	Scientists at Dubna, Russia Lawrence Berkeley Laboratory	1967 1970
Dysprosium	Paul-Emile Lecoq de Boisbaudran	1886
Einsteinium	Albert Ghiorso et. al.	1952
Erbium	Carl Gustaf Mosander	1843
Europium	Eugene-Antole Demarcay	1896
Fermium	Albert Ghiorso et. al.	1952
Fluorine	Ferdinand Frederic Henri Moissan	1886
Francium	Marguerite Catherine Perey	1939
Gadolinium	Jean Charles Galissard de Marignac	1880
Gallium	Paul-Emile Lecoq de Boisbaudran	1875
Germanium	Clemens Winkler	1886
Gold	Know to the Ancients	?
Hafnium	Dirk Coster Charles de Hevesy	1923
Hassium	Peter Armbruster Gottfried Munzenber	1984
Helium	Pierre-Jules-Cesar Janssen	1868
Holmium	Per Theodor Cleve	1879
Hydrogen	Henry Cavendish	1766
Indium	Ferdinand Reich Hieronymus Theodor Richter	1863
Iodine	Barnard Courtois	1811
Iridium	Smithson Tennant	1803
Iron	Known since ancient times	?
Krypton	Sir William Ramsay Morris M. Travers	1898
Lanthanum	Carl Gustaf Mosander	1839
Lawrencium	Albert Ghiorso Torbjorn Sikkeland Almon E. Larsh Robert M. Latimer	1961
Lead	Known since ancient times	?
Lithium	Johann August Arfvedson	1817
Lutetium	Georges Urbain	1907
Magnesium	Sir Humphry Davy	1808
Manganese	Johan Gottlieb Gahn	1774
Meitnerium	Peter Armbruster Gottfried Munzenber	1982
Mendelevium	Stanley G. Thompson Glenn T. Seaborg Bernard G. Harvey Gregory R. Choppin Albert Ghiorso	1955
Mercury	Known since ancient times	?
Molybdenum	Carl Welhelm Scheele	1778
Neodymium	Carl F. Auer von Welsbach	1885
Neon	Sir William Ramsay Morris M. Travers	1898
Neptunium	Edwin M. McMillian Philip H. Abelson	1940
Nickel	Axel Fredrik Cronstedt	1751
Niobium	Charles Hatchett	1801
Nitrogen	Daniel Rutherford	1772
Nobelium	Albert Ghiorso Glenn T. Seaborg Torborn Sikkeland John R. Walton	1958
Osmium	Smithson Tennant	1803
Oxygen	Joseph Priestley	1774
Palladium	William Hyde Wollaston	1803
Phosphorus	Hennig Brand	1669
Platinum	Known to pre-Columbian Indians Antonio de Ulloa	? 1735
Plutonium	Glenn T. Seaborg Joseph W. Kennedy Edward M. McMillan Arthur C. Wohl	1941
Polonium	Marie Sklodowska Curie	1898
Potassium	Sir Humphry Davy	1807
Praseodymium	Carl F. Auer von Welsbach	1885
Promethium	Jacob A. Marinsky Lawrence E. Glendenin Charles D. Coryell	1944
Protactinium	Kasimir Fajans O.H. Gohring	1913
Radium	Marie Sklodowska Curie Pierre Curie	1898
Radon	Friedrich Ernst Dorn	1900
Rhenium	Ida Tacke-Noddack Walter Noddack Otto Carl Berg	1925
Rhodium	William Hyde Wollaston	1803
Roentgenium	Peter Armbruster Gottfried Munzenber	1994
Rubidium	Robert Bunsen Gustav Kirchoff	1861
Ruthenium	Karl Karlovich Klaus	1844
Rutherfordium	Scientists at Dubna, Russia Albert Ghiorso et. al.	1964 1969
Samarium	Jean Charles Galissard de Marignac	1853
Scandium	Lars Fredrik Nilson	1879
Seaborgium	Albert Ghiorso et. al.	1974
Selenium	Jons Jacob Berzelius	1817
Silicon	Jons Jacob Berzelius	1824
Silver	Known since ancient times	?
Sodium	Sir Humphry Davy	1807
Strontium	Adair Crawford	1790
Sulfur	Known since ancient times	?
Tantalum	Anders Gustaf Ekenberg	1802
Technetium	Carlo Perrier Emilio Segre	1937
Tellurium	Franz Joseph Muller von Reichenstein	1782
Terbium	Carl Gustaf Mosander	1843
Thallium	Sir William Crookes	1861
Thorium	Jons Jacob Berzelius	1828
Thulium	Per Theodor Cleve	1879
Tin	Known since ancient times	?
Titanium	The Reverend William Gregor	1791
Tungsten	Juan Jose Fausto Elhuyar	1783
Ununbium	Peter Armbruster Gottfried Munzenber	1996
Ununhexium	Scientists at Dubna, Russia	2001
Ununoctium	Y. T. Oganessian et. al.	2006
Ununpentium	Y. T. Oganessian et. al.	2004
Ununquadium	Scientists at Dubna, Russia	1998
Ununseptium	Not Yet Produced	NA
Ununtrium	Y. T. Oganessian et. al.	2004
Uranium	Martin Heinrich Klaproth	1789
Vanadium	Andres Manuel del Rio Nils Gabriel Sefstrom	1801 1830
Xenon	Sir William Ramsay Morris M. Travers	1898
Ytterbium	Jean Charles Galissard de Marignac	1878
Yttrium	Johan Gadolin	1789
Zinc	Known since ancient times	?
Zirconium	Martin Heinrich Klaproth	1789

Chemical series of the periodic table

	Alkali metals
	Alkaline earth metals
	Lanthanides
	Actinides
	Transition metals

	Poor metals
	Metalloids
	Nonmetals
	Halogens
	Noble gases

The periodic table of the chemical elements is a tabular method of displaying the chemical elements. Although precursors to this table exist, its invention is generally credited to Russian chemist Dmitri Mendeleev in 1869. Mendeleev intended the table to illustrate recurring ('periodic') trends in the properties of the elements. The layout of the table has been refined and extended over time, as new elements have been discovered, and new theoretical models have been developed to explain chemical behavior.

The periodic table is now ubiquitous within the academic discipline of chemistry, providing an extremely useful framework to classify, systematize and compare all the many different forms of chemical behavior. The table has also found wide application in physics, biology, engineering, and industry. The current standard table contains 117 confirmed elements as of October 16, 2006 (while element 118 has been synthesized, element 117 has not).

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