Recorded Chemical Element Discoveries By brandon927 Jan 1, 1669 Phosphorus Oct 21, 1732 Cobalt Oct 21, 1735 Platinum Oct 21, 1751 Nickel Oct 21, 1753 Bismuth Oct 21, 1755 Magnesium Oct 21, 1766 Hydrogen Oct 21, 1771 Oxygen Oct 21, 1772 Nitrogen Oct 21, 1772 Barium Oct 21, 1774 Chlorine Oct 21, 1774 Manganese Oct 21, 1778 Molybdenum Oct 21, 1781 Tungsten Oct 21, 1781 Titanium Oct 21, 1782 Tellerium Oct 21, 1787 Strontium Oct 21, 1789 Zirconium Oct 21, 1789 Uranium Oct 21, 1794 Yttrium Oct 21, 1797 Chromium Oct 21, 1798 Beryllium Oct 21, 1801 Niobium Oct 21, 1801 Vanadium Oct 21, 1802 Tantalum Oct 21, 1803 Palladium Oct 21, 1803 Cerium Oct 21, 1803 Osmium Oct 21, 1803 Iridium Oct 21, 1804 Rhodium Oct 21, 1807 Pottasium Oct 21, 1807 Sodium Oct 21, 1808 Calcium Oct 21, 1808 Boron Oct 21, 1810 Fluorine Oct 21, 1811 Iodine Oct 21, 1817 Lithium Oct 21, 1817 Cadmium Oct 21, 1817 Selenium Oct 21, 1824 Silicon Oct 21, 1825 Aluminium Oct 21, 1825 Bromine Oct 21, 1829 Thorium Oct 21, 1838 Lanthanum