ODWS icon

The Open Door Web Site
HOMEPAGE BIOLOGY PHYSICS ELECTRONICS HISTORY HISTORY OF SCI & TECH MATH STUDIES LEARNING FRENCH STUDY GUIDE  PHOTO GALLERY
CHEMISTRY HOMEPAGE TOPIC CHAPTERS PHYSICAL SCIENCE LABORATORY WORK 

 

Tutorials

Atomic Structure
Electrovalent Bonding
Covalent Bonding
Water
Transition Metals
Metal or Non-metal?
Noble Gases

 

Navigation

Visual Chemistry Homepage : The Periodic Table

 

Dalton

John Dalton by Charles Turner

 

Boyle

Robert Boyle by Johann Kerseboom

 

Davy

Sir Humphry Davy by Thomas Phillips

 

Marie Curie

Marie Curie 1903 Nobel Prize portrait

 

Pierre Curie

Pierre Curie c.1906

 

Dmitri Mendeleev

Dmitri Mendeleev 1897

 

Sir Joseph Norman Lockyer

Sir Joseph Norman Lockyer

VISUAL CHEMISTRY

Custom Search

Chemical Element Identification Timeline

Carbon (C), Iron (Fe), Copper (Cu), Tin (Sn), Zinc (Zn), Silver (Ag), Gold (Au), Lead (Pb)

Prehistoric Times

Antimony (Sb), Sulphur (S), Mercury (Hg),

Ancient Times (Greeks, Romans, Egyptians)

 

1250
AD
-
1600
AD

c1250 Arsenic (As)
Albertus Magnus (Germany)

1557 Platinum (Pt) (Julius Caesar Scaliger refers to platinum in his writings. It had been reported as being used to make jewelry in the New World).

 

1650
AD

c1650 Robert Boyle adopted the scientific method in his chemical research. Chemistry replaces alchemy.

1669 Phosphorus (P) Henning Brand (Germany)

 

1700
AD

Back to top

1735 Cobalt (Co) George Brant (France)

1751 Nickel (Ni) Axel Fredrik Cronstedt (Sweden)

1766 Hydrogen (H) Henry Cavendish (UK)

1772 Nitrogen (N) Daniel Rutherford (UK)

1774 Chlorine (Cl) Carl Wilhelm Scheele (Sweden)

1774 Manganese (Mn) John Gottlieb Gahn (Sweden)

1778 Molybdenum (Mo) Carl Wilhelm Scheele (Sweden)

1783 Tungsten (W) José and Fausto Elhuyar (Spain)

1790 Strontium (Sr) Adair Crawford (UK)

1794 Yttrium (Y) Johan Gadolin (Sweden)

1750
AD

Back to top

1753 Bismuth (Bi) Claude-François Geoffroy (France)

1775 Oxygen (O) Joseph Priestly (UK)

1783 Tellurium (Te) Franz Joseph Muller von Reichenstein (Romania)

1789 Antoine Lavoisier's Elementary Treatise of Chemistry introduces a new definition of an element.

1789 Zirconium (Zr) Martin Heinrich Klaproth (Germany)

1789 Uranium (U) RA symbol Martin Heinrich Klaproth (Germany)

1791 Titanium (Ti) William Gregor (UK)

1797 Beryllium (Be) Louis Nicolas Vauquelin (France)

1797 Chromium (Cr) Nicolas-Louis Vauquelin (France)

1801 Vanadium (V) Andrés Manuel del Río, (Mexico)

1801 Niobium (Nb) Charles Hatchett (UK)

1802 Tantalum (Ta) Anders Gustaf Ekeberg (Sweden)

 

 

 

 

 

 

1808 Boron (B) Sir Humphry Davy (UK), Joseph Louis Gay-Lussac and Louis Jacques Thénard (France)

1808 Magnesium (Mg) Sir Humphry Davy (UK)

1808 Calcium (Ca) Sir Humphry Davy (UK)

1808 Barium (Ba) Sir Humphry Davy (UK)

1824 Silicon (Si) Jõns Jakob Berzelius (Sweden)

1826 Bromine (Br) Jõns Jakob Berzelius (Sweden)

 

 

 

 

1842 Erbium (Er) Carl Gustav Mosander (Sweden)

1844 Ruthenium (Ru) Karl Klauss (Estonia)

1800
AD

Back to top

1803 Palladium (Pd) William Hyde Wollaston (UK)

1803 Rhodium (Rh) William Hyde Wollaston (UK)

1803 Cerium (Ce) Martin Klaproth (Germany) and Jõns Jakob Berzelius and Wilhelm Hisinger (Sweden).

1803 Osmium (Os) Smithson Tennant and William Hyde Wollaston (UK)

1803 Iridium (Ir) Smithson Tennant (UK)

1807 John Dalton's Theory of Atoms is published.

1807 Sodium (Na) Humphry Davy (UK)

1807 Potassium (K) Humphry Davy (UK)

1811 Iodine (I) Bernard Courtois (France)

1817 Lithium (Li) Johann Arfwedson (Sweden)

1817 Selenium (Se) Jõns Jacob Berzelius (Sweden)

1817 Cadmium (Cd) Friedrich Stromeyer (Germany)

1825 Aluminium (Al) Hans Christian Øersted (Denmark)

1829 Thorium (Th) RA icon Jõns Jacob Berzelius (Sweden)

1839 Lanthanum (La) Carl Gustav Mosander (Sweden)

1843 Terbium (Tb) Carl Gustav Mosander (Sweden)

1860 Caesium (Cs) Robert Wilhelm Bunsen and Gustav Robert Kirchhoff (Germany)

 

 

1878 Holmium (Ho) Jacques-Louis Soret (France)

1878 Ytterbium (Yb) Jean Charles Galissard de Marigac (France)

1880 Gadolinium (Gd) Jean Charles Galissard de Marigac (France)

1886 Fluorine (F)Ferdinand Frederic Henri Moisson (France)

1886 Germanium (Ge) Clemens Alexander Winkler (Germany)

1886 Dysprosium (Dy) François Lecoq de Boisbaudran (France)

1898 Neon (Ne) Sir William Ramsay and Morris William Travers (UK)

1898 Krypton (Kr) Sir William Ramsay and Morris William Travers (UK)

1898 Xenon (Xe) Sir William Ramsay and Morris William Travers (UK)

1898 Polonium (Po) RA icon Pierre and Marie Curie (France)

1898 Radium (Ra) RA icon Pierre and Marie Curie (France)

1850
AD

Back to top

1861 Rubidium (Rb) Robert Wilhelm Bunsen and Gustav Robert Kirchhoff (Germany)

1861 Thallium (Tl) Sir William Crookes (UK)

1863 Indium (In) Ferdinand Reich and Hieronymous Theodor Richter (Germany)

1869 Dmitri Mendeleev presents his version of the periodic table to the Russian Chemical Society.

1869 Helium (He) Pierre Janssen (France) and Joseph Lockyer (UK)

1875 Gallium (Ga) François Lecoq de Boisbaudran (France)

1879 Scandium (Sc) Lars Fredrick Nilson (Sweden)

1879 Samarium (Sm) François Lecoq de Boisbaudran (France)

1879 Thulium (Tm) Per Theodor Cleve (Sweden)

1885 Praseodymium (Pr) Carl Auer von Welsbach (Austria)

1885 Neodymium (Nd) Carl Auer von Welsbach (Austria)

1895 Argon (Ar) Sir William Ramsay and John William Strutt (Lord Rayleigh) (UK)

1899 Radon (Rn) RA icon Pierre and Marie Curie (France)

1899 Actinium (Ac) RA icon André-Louis Debierne (France)

1901 Europium (Eu) Eugène-Anatole Demarçay (France)

 

 

1922 Hafnium (Hf) Dirk Coster and Gyõrgy Karl von Hevesy (Denmark)

 

 

 

 

1940 Astatine (At) RA icon Dale Raymond Corson, Kenneth Ross Mackenzie, and Emilio Segrè (USA)

1940 Neptunium (Np) RA icon Edwin Mattison McMillan and Philip Abelson (USA)

1944 Curium (Cm) RA icon Glenn Theodore Seaborg, Ralph Arthur James, and Albert Ghiorso (USA)

1900
AD

Back to top

1907 Lutetium (Lu) Georges Urbain (France) and Carl Auer von Welsbach (Austria)

1913 Protactinium (Pa) RA icon Kasimir Fajans and Otto H. Gõhring (USA)

1925 Rhenium (Re) Walter Noddack, Ida Tacke, and Otto Berg (Germany)

1939 Technetium (Tc) RA icon Emilio Segrè and Carlo Perrier (Italy)

1939 Francium (Fr) RA icon Marguerite Perey (France)

1941 Plutonium (Pu) RA icon Glenn Theodore Seaborg, Michael Cefola, Edwin Mattison McMillan, Joseph W. Kennedy, and Arthur Charles Wahl (USA)

1945 Promethium (Pr) RA icon Charles Coryell, Jack Marinsky, Lawrence Glendenin and Harold G. Richter (USA)

1945 Americium (Am) RA icon Glenn Theodore Seaborg, Leon Owen Morgan, Ralph Arthur James, and Albert Ghiorso (USA)

1949 Berkelium (Bk) RA icon Stanley Gerald Thompson, Albert Ghiorso, Glenn Theodore Seaborg (USA)

1950 Californium (Cf) RA icon Stanley Gerald Thompson, Kenneth Street, Albert Ghiorso, and Glenn Theodore Seaborg (USA)

1952 Einsteinium (Es) RA icon Albert Ghiorso, Stanley Gerald Thompson, Gary Hoyt Higgins, Glenn Theodore Seaborg (USA)

1958 Nobelium (No) RA icon Albert Ghiorso, Torbjørn Sikkeland, John Richard Walton, and Glenn Theodore Seaborg (USA)

1964 Rutherfordium (Rf) RA icon Georgy Nikolaevich Flerov et al. (Russia)

1968 Dubnium (Db) RA icon Georgy Nikolaevich Flerov et al. (Russia)

1974 Seaborgium (Sg) RA icon Albert Ghiorso, J. Michael Nitschke, Jose R. Alonso, Carol T. Alonso, Matti Nurmia, Ervin Kenneth Hulet, Ronald W. Lougheed, and Glenn Theodore Seaborg (USA)

1982 Meitnerium (Mt) RA icon Gottfried Münzenberg, Peter Armbruster et al. (Germany)

1984 Hassium (Hs) RA icon Gottfried Münzenberg, Peter Armbruster et al. (Germany)

1950
AD

Back to top

1953 Fermium (Fm) RA icon Albert Ghiorso, Stanley Gerald Thompson, Gary Hoyt Higgins, Glenn Theodore Seaborg (USA)

1955 Mendelevium (Md) RA icon Albert Ghiorso, Bernard G. Harvey, Gregory Robert Choppin, Stanley Gerald Thompson, and Glenn Theodore Seaborg (USA)

1961 Lawrencium (Lr) RA icon Albert Ghiorso, Torbjørn Sikkeland, Almon E. Larsh and Robert M. Latimer (USA)

 

 

 

 

 

 

1981 Bohrium (Bh) RA icon Gottfried Münzenberg et al. (Germany)

 

Note: As of 2012, 118 elements have been identified. The timeline above shows 109 of them. It does not include the synthetic elements 110 Darmstadtium (Ds) created in 1994, 111 Roentgenium (Rg) created in 1994, 112 Copernicium (Cn) created in 1996, 113 Nihonium (Nh) created in 2003, 114 Flerovium (Fl) created in 1998, 115 Moscovium (Mc) created in 2003, 116 Livermorium (Lv) created in 2000, 117 Tennessine (Ts) created in 2008 and 118 Oganesson (Og) created in 2006

 

The Open Door Web Site is non-profit making. Your donations help towards the cost of maintaining this free service on-line.

Donate to the Open Door Web Site using PayPal

SITE MAP
WHAT'S NEW?
ABOUT

PRIVACY

COPYRIGHT

SPONSORSHIP

DONATIONS

ADVERTISING

© The Open Door Team 2017
Any questions or problems regarding this site should be addressed to the webmaster

© Shirley Burchill 2017

Hosted By
Web Hosting by HostCentric


SiteLock