14 atoms and their years of discovery
Argon       1894
Boron       1808
Einsteinium 1952
Fluoride    1886
Hydrogen    1790
Iodine      1811
Nitrogen    1772
Oxygen      1774
Phosphorus  1669
Potassium   1807
Tungsten    1783
Uranium     1789
Vanadium    1830
Yttrium     1794
