Discovery Date
|
Element
|
9000 BCE
|
Copper
|
7000 BCE
|
Lead
|
6000 BCE
|
Gold
|
5000 BCE
|
Iron and Silver
|
3750 BCE
|
Carbon
|
3500 BCE
|
Tin
|
2000 BCE
|
Sulfur and Mercury
|
1000 BCE
|
Zinc
|
800
|
Arsenic and Antimony
|
1669
|
Phosphorus
|
1735
|
Cobalt
|
1748
|
Platinum
|
1751
|
Nickel
|
1753
|
Bismuth
|
1755
|
Magnesium
|
1766
|
Hydrogen
|
1771
|
Oxygen
|
1772
|
Nitrogen or Barium
|
1774
|
Chlorine or Manganese
|
1778
|
Molybdenum
|
1781
|
Tungsten
|
|
Discovery Date
|
Element
|
1782
|
Tellurium
|
1787
|
Strontium
|
1789
|
Zirconium or Uranium
|
1791
|
Titanium
|
1794
|
Yttrium
|
1797
|
Chromium
|
1798
|
Beryllium
|
1801
|
Vanadium or Niobium
|
1802
|
Tantalum
|
1803
|
Palladium, Cerium, Osmium, Iridium
|
1804
|
Rhodium
|
1807
|
Potassium or Sodium
|
1808
|
Calcium or Boron
|
1810
|
Fluorine
|
1811
|
Iodine
|
1817
|
Lithium, Cadmium, Selenium
|
1823
|
Silicon
|
1825
|
Aluminum or Bromine
|
1829
|
Thorium
|
1838
|
Lanthanum
|
1842
|
Erbium or Terbium
|
|
Discovery Date
|
Element
|
1844
|
Ruthenium
|
1860
|
Caesium
|
1861
|
Rubidium or Thallium
|
1863
|
Indium
|
1868
|
Helium
|
1875
|
Gallium
|
1878
|
Ytterbium or Holmium
|
1879
|
Thulium, Scandium, Samarium
|
1880
|
Gadolinium
|
1885
|
Praseodymium or Neodymium
|
1886
|
Germanium or Dysprosium
|
1894
|
Argon
|
1896
|
Europium
|
1898
|
Krypton, Neon, Xenon, Polonium, Radium
|
1899
|
Radon
|
1902
|
Actinium
|
1906
|
Lutetium
|
1908
|
Rhenium
|
1913
|
Protactinium
|
1922
|
Hafnium
|
1937
|
Technetium
|
|
Discovery Date
|
Element
|
1939
|
Francium
|
1940
|
Astatine, Neptunium, or Plutonium
|
1942
|
Promethium
|
1944
|
Curium or Americium
|
1949
|
Berkelium
|
1950
|
Californium
|
1952
|
Einsteinium or Fermium
|
1955
|
Mendelevium
|
1961
|
Lawrencium
|
1966
|
Nobelium
|
1969
|
Rutherfordium
|
1970
|
Dubnium
|
1974
|
Seaborgium
|
1981
|
Bohrium
|
1982
|
Meitnerium
|
1984
|
Hassium
|
1995
|
Darmstadtium or Roentgenium
|
1996
|
Copernicium
|
2004
|
Nihonium, Flerovium, or Livermorium
|
2006
|
Oganesson
|
2010
|
Moscovium or Tennessine
|
|