Breaking Down the Periodic Table

PERIODIC TABLE OF THE ELEMENTS 1 2 H He 2 13 14 15 16 17 3 Li 11 Na 4 Be 12 Mg 3 4 5 6 7 8

At first, Mendeleev argued that helium could not exist; it had no place on the periodic table But, around the turn of the twentieth century,

periodic table View our new Interactive Periodic Table! · 1) Hydrogen · 2) Helium · 3) Lithium · 4) Beryllium · 5) Boron · 6) Carbon · 7) Nitrogen · 8) Oxygen

table VIDEOS A lesson about every single element on the periodic table Created by the Periodic Videos team using the TED-Ed platform