The Periodic Table

Discover the origins of the Periodic Table! Learn about Mendeleev and how elements were first organized.

Who is credited with creating the Periodic Table? Mendeleev Paden Galileo Creen In the 1860s, how many elements were known to man? 140 60 200 25 How were elements initially sorted? by mass number by atomic weight by the number of electrons they contained How were elements initially studied? by reactivity by atomic weight by color any possible way scientists could Is the periodic table set in stone today? yes no