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Penemuan unsur kimia

Penemuan unsur kimia yang diketahui sekarang ditampilkan secara kronologis

di sini. Unsur kimia yang ditampilkan umumnya berdasarkan urutan tiap-tiap

unsur tersebut pertama kali dinyatakan sebagai unsur murni, karena tanggal persis

 penemuan sebagian besar unsur tidak dapat secara akurat ditentukan. Beberapa

unsur-unsur pertama tidak memiliki catatan tertulis.

Masa purbakala

Nama Tanggal Penemu

Carbon zaman dulu Tidak diketahui

Perak   zaman dulu Tidak diketahui

Tembaga  zaman dulu Tidak diketahui

Sulfur  zaman dulu Tidak diketahui

Timah zaman dulu Tidak diketahui

Emas zaman dulu Tidak diketahui

Timbal  zaman dulu Tidak diketahui

Besi   zaman dulu Tidak diketahui

Raksa zaman dulu Tidak diketahui

Abad ke-13

Nama Tanggal Penemu Catatan

Arsen   1250  

Albertus Magnus di

 percaya sebagai orang

 pertama yang

memisahkan unsur ini.

Abad ke-15

Nama Tanggal Penemu Catatan

Antimon  1450  

Pertama kali diuraikan

secara ilmiah oleh

Tholden

Bismut 

Abada

ke 15?

May have been

described in writings

attributed to Basil

Valentinus, definitively

identified by Claude

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François Geoffroy in

1753

Abad ke-16

Nama Tanggal Penemu Catatan

Zinc   1526  

Diidentifikasi sebagai

logam unik oleh

Paracelsus

Abad ke-17

Nama Tanggal Penemu Catatan

Fosfor   1669  

Ditemukan oleh

Hening Brand, namun

 baru diuraikan oleh

Robert Boyle

Abad ke-18

Nama Tanggal Penemu CatatanKobalt  1732  Georg Brandt  

Platinum ca. 1741

Ditemukan secara

tepisah oleh Antonio

de Ulloa

(dipublikasikan tahun

1748) dan Charles

Wood. 

Sejak abad ke 16 telah diketahui di

Amerika Selatan pada tambang biji

emas.

 Nikel  1751 

Axel Fredrik 

Cronstedt 

Magnesium 

1755 

Joseph Black  

Hidrogen  1766 

Dipisahkan dan

diuraikan oleh Henry

Cavendish, namun

 baru diberi nama oleh

Antoine Lavoisier 

Oksigen  1771  Joseph Priestley

Because of his belief in phlogiston, 

Priestley did not realise that he had

 prepared a new element, and

thought that he had managed to

 prepare air free from phlogiston

("de-phlogisticated air").

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 Nitrogen  1772  Daniel Rutherford  

Klor  1774  Carl Wilhelm Scheele 

Mangan  1774  Johan Gottlieb Gahn 

Molibdenum  1778  Carl Wilhelm Scheele 

Telurium  1782 

Franz-Joseph Müller 

von Reichenstein  

Wolfram  1783 

Juan José Elhuyar dan

Fausto Elhuyar 

Uranium  1789 

Martin Heinrich

Klaproth 

Dinamai Uranium setelah

ditemukannya planet baru, Uranus. 

Zirconium  1789 

Martin Heinrich

Klaproth 

Wolfram  1793 

Martin Heinrich

Klaproth 

Itrium  1794  Johan Gadolin  

Titanium  1797 

Martin Heinrich

Klaproth 

Kromium  1797 

Louis Nicolas

Vauquelin 

Beryllium  1798 

Louis Nicolas

Vauquelin 

Abad ke-19

Nama Tanggal Penemu Catatan

Vanadium  1801  

Andrés Manuel del

Río  

 Niobium  1801   Charles Hatchett    Named columbium by discoverer.

Tantalum  1802  

Anders Gustaf 

Ekeberg 

Serium  1803  

Martin Heinrich

Klaproth; Jöns Jakob

Berzelius and

Hisinger 

 Named after the newly discoveredasteroid, Ceres. Discovered nearly

simultaneously in two

laboratories, though it was later 

shown that Berzelius and

Hisinger's cerium was actually amixture of cerium, lanthanum and

so-called didymium. 

Rhodium 1803  

William Hyde

Wollaston  

Palladium 

1803 

Ryan Lumadue 

 Named after the newly discovered

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asteroid, Pallas. 

Osmium  1803   Smithson Tennant  

Iridium  1803   Smithson Tennant  

Potassium 1807   Humphry Davy

Discovered using electricity from

the Voltaic pile to decompose the

salts of alkali metals.

Sodium 1807   Humphry Davy

Discovered using electricity from

the Voltaic pile to decompose the

salts of alkali metals; discovered a

few days after potassium, using

the same method.

Calcium  1808   Humphry Davy

Discovered using electricity from

the Voltaic pile to decompose the

salts of alkali metals.

Barium  1808   Humphry Davy

Discovered using electricity from

the Voltaic pile to decompose the

salts of alkali metals.

Boron  1808  

Joseph Louis Gay-

Lussac & Louis-

Jacques Thenard

Yodium  1811   Bernard Courtois  

Lithium  1817  

Johan August

Arfwedson 

Cadmium 1817  

Friedrich Strohmeyer 

Independently

discovered by K.S.L

Hermann

Selenium  1817   Jöns Jakob Berzelius  

Silicon 1823   Jöns Jakob Berzelius  

Aluminium 1825  

Hans Christian

Ørsted  

 May have been isolated in Roman

times, see History of Aluminium. 

Brom   1826   Antoine JérômeBalard  

Thorium  1828   Jöns Jakob Berzelius  

Beryllium  1828  

Friedrich Wöhler. 

Independently

discovered by A.A.B.

Bussy

Lantanum  1839-41Carl Gustaf 

Mosander  

Discovered when Mosander 

showed that the cerium isolated in

1803 by Berzelius was actually a

mixture of cerium, lanthanum and

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so-called didymium.

Terbium 

1843 

Carl Gustaf 

Mosander  

Erbium  1843  

Carl Gustaf 

Mosander  

Rutenium 1844   Karl Klaus  

Caesium  1860  

Robert Bunsen and

Gustav Kirchoff 

First identified by its blue

spectroscopic emission line. 

Rubidium 1860  

Robert Bunsen and

Gustav Kirchoff 

First identified by its red

spectroscopic emission line.

Talium  1861   Sir William Crookes  

First identified by its bright green

spectroscopic emission line.Indium   1863  

Ferdinand Reich and

Theodor Richter 

First identified by its indigo-blue

spectroscopic emission line.

Helium  1868  

Independently by

Pierre Jansen and

 Norman Lockyer 

First identified by astronomers as

an emission line in the spectrum of 

the sun.

Galium  1875  

Paul Emile Lecoq de

Boisbaudran 

Predicted by Mendeleev in 1871

as ekaaluminium.

Ytterbium  1878  

Jean Charles

Galissard de

Marignac 

Thulium 1879   Per Teodor Cleve  

Skandium  1879   Lars Fredrik Nilson  

Predicted by Mendeleev in 1871

as ekaboron.

Holmium 1879  

Marc Delafontaine, 

Jacques-Louis Soret

and Per Teodor Cleve

Samarium  1879  

Paul Emile Lecoq de

Boisbaudran 

Gadolinium  1880  

Jean Charles

Galissard deMarignac 

Praseodymium  1885  

Carl Auer von

Welsbach  

The didymium isolated by

Mosander in 1839 was shown to

 be two separate elements;

 praseodymium and neodymium.

 Neodimium  1885  

Carl Auer von

Welsbach  

The didymium isolated by

Mosander in 1839 was shown to

 be two separate elements,

 praseodymium and neodymium.

Dysprosium 

1886 

Paul Emile Lecoq de

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Boisbaudran 

Germanium 

1886 

Clemens Winkler 

Predicted by Mendeleev in 1871

as ekasilicon.

Fluor   1886  

Joseph Henri

Moissan  

Argon  1894  

Lord Rayleigh & Sir 

William Ramsay

Discovered by comparing the

molecular weights of nitrogen

 prepared by liquefaction from air 

and nitrogen prepared by chemical

means.

 Neon  1898   Sir William RamsaySeparated from liquid argon by

difference in boiling point.

Kripton  1898   Sir William RamsaySeparated from liquid argon by

difference in boiling point.

Xenon  1898   Sir William RamsaySeparated from liquid argon by

difference in boiling point.

Radium  1898  

Pierre Curie and

Marie Curie

Polonium 1898  

Pierre Curie and

Marie Curie

Radon  1898  

Friedrich Ernst Dorn, 

who called it nitron

Discovered as a product of the

radioactive decay of radium.

Actinium  1899   Ryan Lumadue  

[sunting] Abad ke-20

Nama Tanggal Penemu Catatan

Europium  1901  Eugene Demarcay 

Lutesium  1907  Georges Urbain  

Protactinium  1917 

Kasimir Fajans, O.

Göhring, Fredrich

Soddy, John

Cranston, Lise

Meitner and Otto

Hahn

Hafnium  1923 

Dirk Coster and

György Hevesy

Renium  1925 

Walter Noddack and

Ida Tacke

Teknesium  1937 

Carlo Perrier and

Emilio Segrè

First synthetic element discovered.

Predicted by Mendeleev in 1871

as ekamanganese.

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Fransium  1939  Marguerite Derey

Last naturally occurring element

discovered; all elements

discovered after it are synthetic.

Astatin   1940 

Dale R. Corson, 

K.R.Mackenzie, 

Emilio Segrè

Later determined to occur 

naturally in minuscule qunatitites

(<25 grams in earth's crust).

 Neptunium  1940 

E.M. McMillan &

Philip H. Abelson, 

University of 

California, Berkeley

First transuranium element

discovered.

Plutonium 1941 

Glenn T. Seaborg, Arthur C. Wahl, 

Joseph W. Kennedy, 

Emilio Segrè

Curium  1944  Glenn T. Seaborg  

Americium  1944  Glenn T. Seaborg  

Promethium 1945  Jacob A. Marinsky 

Berkelium  1949 

Albert Ghiorso, 

Glenn T. Seaborg, 

Stanley G.

Thompson, KennethStreet Jr.

Californium  1950 

Albert Ghiorso, 

Glenn T. Seaborg, 

Stanley G.

Thompson, Kenneth

Street Jr.

Einsteinium 1952 

Argonne Laboratory, 

Los Alamos

Laboratory, and

University of California

Fermium  1953 

Argonne Laboratory, 

Los Alamos

Laboratory, and

University of 

California

Mendelevium  1955 

Glenn T. Seaborg, 

Evans G. Valens

 Nobelium  1958 

Albert Ghiorso, 

Glenn T. Seaborg, 

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John R. Walton and

Torbørn Sikkeland

Lawrencium  1961 

Albert Ghiorso, Torbjørn Sikkeland, 

Almon Larsh and

Robert M. Latimer 

Rutherfordium  1964 

Joint Institute for 

 Nuclear Research in

Dubna, USSR 

Dubnium  1970  Albert Ghiorso  

Seaborgium 

1974 

Joint Institute for 

 Nuclear Research and

University of California, Berkeley

Bohrium  1976 

Y. Oganessian et al,

Dubna and confirmed

at GSI (1982)

Meitnerium  1982 

Peter Armbruster and

Gottfried

Münzenberg, GSI

Hassium  1984 

Peter Armbruster and

Gottfried

Münzenberg

Darmstadtium  1994 

S. Hofmann, V.

 Ninov et al, GSI

Roentgenium  1994 

S. Hofmann, V.

 Ninov et al, GSI

Ununbium  1996 

S. Hofmann, V.

 Ninov et al, GSI

Ununquadium  1999 

Joint Institute for 

 Nuclear Research in

Dubna[1] 

Abad ke-21

Nama Tanggal Penemu Catatan

Ununhexium 2001 

Joint Institute for 

 Nuclear Research in

Dubna[2] 

Ununtrium  2004 

Joint Institute for 

 Nuclear Research in

Dubna and Lawrence

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Livermore National

Laboratory[3] 

Ununpentium  2004 

Joint Institute for  Nuclear Research in

Dubna and Lawrence

Livermore National

Laboratory[3] 

Ununoctium  2006 

Joint Institute for 

 Nuclear Research in

Dubna and Lawrence

Livermore National

Laboratory[4]