Antiquity
6 Carbon
16 Sulphur
26 Iron
29 Copper
47 Silver
50 Tin
79 Gold
80 Mercury
82 Lead
Middle Ages
33 Arsenic
51 Antimony
83 Bismuth
Recorded discoveries
1669 15 Phosphorus
     Brand
1735 27 Cobalt
     Brandt
1735 78 Platinum
     Ulloa
1746 30 Zinc
     Marggraf
1751 28 Nickel
     Cronstedt
1772 7 Nitrogen
     Rutherford
1774 8 Oxygen
     Priestley
1774 17 Chlorine
     Scheele
1774 25 Manganese
     Gahn
1776 1 Hydrogen
     Cavendish
1781 42 Molybdenum
     Scheele
1783 52 Tellurium
     Müller
1783 74 Wolfram
     Elhuyar
1787-90 38 Strontium
     Cruikshank et al.
1789 40 Zirconium
     Klaproth
1789 92 Uranium
     Klaproth
1791 22 Titanium
     Gregor
1794 39 Yttrium
     Gadolin
1797 24 Chromium
     Vauquelin
1798 4 Beryllium
     Vauquelin
1801 41 Niobium
     Hatchett
1802 73 Tantalum
     Ekeberg
1803 45 Rhodium
     Wollaston
1803 46 Palladium
     Wollaston
1803 58 Cerium
     Hisinger et al.
1803 76 Osmium
     Tennant
1803 77 Iridium
     various
1807 11 Natrium-Sodium
     Davy
1807 19 Kalium-Potassium
     Davy
1808 5 Borium
     Gay-Lussac et al.
1808 12 Magnesium
     Davy
1808 20 Calcium
     Davy
1808 56 Barium
     Davy
1811 53 Iodine
     Courtois
1817 3 Lithium
     Arfwedson
1817 34 Selenium
     Berzelius
1817 48 Cadmium
     Strohmeyer
1824 14 Silicium
     Berzelius
1825 13 Aluminium
     Ørsted
1826 35 Bromium
     Balard
1829 90 Thorium
     Berzelius
1830 23 Vanadium
     Sefström
1839 57 Lanthanium
     Mosander
1842 68 Erbium
     Mosander
1843 65 Terbium
     Mosander
1844 44 Ruthenium
     Klaus
1860 55 Cesium
     Kirchhoff & Bunsen
1861 37 Rubidium
     Bunsen & Kirchhoff
1861 81 Thallium
     Crookes
1863 49 Indium
     Reich & Richter
1875 31 Gallium
     Lecoq de B.
1876 21 Scandium
     Nilson
1878 67 Holmium
     Soret
1878 70 Ytterbium
     Marignac
1879 62 Samarium
     Lecoq de B.
1879 69 Thulium
     Cleve
1880 64 Gadolinium
     Marignac
1885 59 Praseodymium
      Auer v.W.
1885 60 Neodymium
     Auer v.W.
1886 9 Fluorine
     Moissan
1886 32 Germanium
     Winkler
1886 66 Dysprosium
     Lecoq de B.
1894 18 Argon
     Ramsay & Rayleigh
1895 2 Helium
     Ramsay et al.
1898 10 Neon
     Ramsay & Travers
1898 36 Krypton
     Ramsay & Travers
1898 54 Xenon
     Ramsay & Travers
1898 84 Polonium
     Curie
1898 88 Radium
     Curie
1899 89 Actinium
     Debierne
1900 86 Radon
     Dorn
1901 63 Europium
     Eugene Demarcay
1907 71 Lutetium
     Urbain & Auer v.W.
1913 91 Protactinium
     Hahn et al.
1923 72 Hafnium
     Coster & Hevesy
1925 75 Rhenium
     Noddack et al.
1937 43 Technetium
     Perrier & Segre
1939 87 Francium
     Perey
1940 85 Astatium
     Corson et al.
1940 93 Neptunium
     McMillan et al.
1940 94 Plutonium
     Seaborg et al.
1944 95 Americium
     Seaborg et al.
1944 96 Curium
     Seaborg et al.
1945 61 Promethium
     Marinsky et al.
1949 97 Berkelium
     Seaborg et al.
1950 98 Californium
     Seaborg et al.
1952 99 Einsteinium
     Ghiorgio et al.
1952 100 Fermium
     Ghiorgio et al.
1955 101 Mendelevium
     Seaborg et al.
1957 102 Nobelium
     Seaborg et al.
1961 103 Lawrencium
     Ghiorso et al.
1964 104 Rutherfordium
     JNI Dubna
1967 105 Dubnium
     JNI Dubna/Berkeley
1974 106 Seaborgium
     Ghiorso et al.
1981 107 Bohrium
     Armbruster et al.
1982 109 Meitnerium
     Armbruster et al.
1984 108 Hassium
     Armbruster et al.
1994 110 Ununnilium
     Hofmann et al.
1994 111 Unununium
     Hofmann et al.
1996 112 Ununbium
     Hofmann et al.
1998 114 Ununquadium
     JNI Dubna
1999 116 Ununhexium
     Ninov et al.
1999 118 Ununoctium
     Ninov et al.