Periodic Table with Dates of Discovery at Chemical Elements.com



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  1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18
1 H He
1766 1895
2 Li Be B C N O F Ne
1817 1798 1808 * 1772 1774 1886 1898
3 Na Mg Al Si P S Cl Ar
1807 1808 1825 1823 1669 * 1774 1894
4 K Ca Sc Ti V Cr Mn Fe Co Ni Cu Zn Ga Ge As Se Br Kr
1807 1808 1879 1791 1830 1797 1774 * 1737 1751 * 1746 1875 1886 * 1817 1826 1898
5 Rb Sr Y Zr Nb Mo Tc Ru Rh Pd Ag Cd In Sn Sb Te I Xe
1861 1790 1794 1789 1801 1778 1937 1844 1803 1803 * 1817 1863 * * 1782 1804 1898
6 Cs Ba * Hf Ta W Re Os Ir Pt Au Hg Tl Pb Bi Po At Rn
1860 1808 1923 1802 1783 1925 1804 1804 1735 * * 1861 * * 1898 1940 1898
7 Fr Ra ** Rf Db Sg Bh Hs Mt Uun Uuu Uub
1939 1898 1969 1970 1974 1976 Disputed 1982 1987 1994 1996
* La Ce Pr Nd Pm Sm Eu Gd Tb Dy Ho Er Tm Yb Lu
1839 1803 1885 1925 1945 1879 1901 1880 1843 1886 1878 1843 1879 1878 1907
** Ac Th Pa U Np Pu Am Cm Bk Cf Es Fm Md No Lr
1899 1828 1917 1789 1940 1940 1945 1944 1949 1950 1952 1953 1955 1957 1961

* Known to ancient civilizations

Element Groups (Families)

Alkali Earth Alkaline Earth Transition Metals
Rare Earth Other Metals Metalloids
Non-Metals Halogens Noble Gases