Nickel - Periodic Table of Videos
22:43
Tungsten (new) - Periodic Table of Videos
13:23
Chromium - Periodic Table of Videos
13:10
Black Nitrogen - Periodic Table of Videos
8:13
Copper - Periodic Table of Videos
14:35
Hafnium - Periodic Table of Videos
13:19
Indium - Periodic Table of Videos
24:46
Who REALLY invented the periodic table?
15:18