Time Line of Elements Discovery
Dates
|
Elements |
Ancient Times |
|
Time of the Alchemists |
Arsenic (Magnus
~1250) |
1735 to 1745 |
|
1745 to 1755 |
|
1755 to 1765 |
-- |
1765 to 1775 |
Hydrogen
(Cavendish 1766) |
1775 to 1785 |
Molybdenum (Scheele 1778) |
1785 to 1795 |
Uranium (Peligot 1841) |
1795 to 1805 |
Vanadium (del Rio
1801) |
1805 to 1815 |
Sodium (Davy
1807) |
1815 to 1825 |
Lithium (Arfvedson 1817) |
1825 to 1835 |
Aluminum (Wohler 1827) |
1835 to 1845 |
Lanthanum (Mosander 1839) |
1845 to 1855 |
-- |
1855 to 1865 |
Cesium (Bunsen
& Kirchoff 1860) |
1865 to 1875 |
Fluorine (Moissan 1866) |
1875 to 1885 |
Gallium (Boisbaudran 1875) |
1885 to 1895 |
Praseodymium (von
Weisbach 1885) |
1895 to 1905 |
Helium (Janssen
1868; Ramsay 1895) |
1905 to 1915 |
Lutetium (Urbain 1907) |
1915 to 1925 |
Hafnium (Coster & von Hevesy 1923) |
1925 to 1935 |
Rhenium (Noddack, Berg, & Tacke
1925) |
1935 to 1945 |
Technetium
(Perrier & Segre 1937 ) |
1945 to 1955 |
Mendelevium (Ghiorso, Harvey, Choppin,
Thompson, and Seaborg 1955) |
1955 to 1965 |
Nobelium (Ghiorso, Sikkeland, Walton, and
Seaborg 1958) |
1965 to 1975 |
Dubnium
(L Berkeley Lab, USA - Dubna Lab, Russia 1967) |
1975 to 1985 |
Bohrium
(Dubna |
1985 to 1995 |
Ununnilium
(Hofmann, Ninov, et al. GSI-Germany 1994) |
1995 to 2005 |
Ununbium
(Hofmann, Ninov et al. GSI-Germany 1996) |