A timeline to show when each element of the periodic table was discovered. By millieperkins Jan 1, 1669 1669 - Phosphorus (P) Additional Information Jan 1, 1735 1735 - Platinum (Pt) Additional Information Jan 1, 1737 1737 - Cobalt (Co) Additional Information Jan 1, 1746 1746 - Zinc (Zn) Additional Information Jan 1, 1751 1751 - Nickel (Ni) Additional Information Jan 1, 1766 1766 - Hydrogen (H) Additional Information Jan 1, 1772 1772 - Nitrogen (N) Additional Information Jan 1, 1774 1774 - Oxygen (O) Additional Information Jan 1, 1774 1774 - Chlorine (Cl) Additional Information Jan 1, 1774 1774 - Manganese (Mn) Additional Information Jan 1, 1778 1778 - Molybdenum (Mo) Additional Information Jan 1, 1782 1782 - Tellurium (Te) Additional Information Jan 1, 1783 1783 - Tungsten (W) Additional Information Jan 1, 1789 1789 - Zirconium (Zr) Additional Information Jan 1, 1789 1789 - Uranium (U) Additional Information Jan 1, 1790 1790 - Strontium (Sr) Additional Information Jan 1, 1791 1791 - Titanium (Ti) Additional Information Jan 1, 1797 1797 - Chromium (Cr) Additional Information Jan 1, 1798 1798 - Beryllium (Be) Additional Information Jan 1, 1799 1799 - Yttrium (Y) Additional Information Jan 1, 1801 1801 - Niobium (Nb) Additional Information Jan 1, 1802 1802- Tantalum (Ta) Additional Information Jan 1, 1803 1803 - Cerium (Ce) Additional Information Jan 1, 1803 1803 - Palledium (Pd) Additional Information Jan 1, 1803 1803 - Rhodium (Rh) Additional Information
