Conclusion: History of the Periodic Table

After evolving for over 200 years through the work of many people, the Periodic Table remains at the heart of the study of chemistry.

In addition, debate continues over the placement of several elements, including the composition of group 3, and over whether there is an optimal form of the Periodic Table. A good candidate to fill this role might be Charles Janet’s left-step table, which displays greater regularity than the conventional table.