International year of the periodic table

The Periodic Table of Chemical Elements is one of the most significant achievements in science, capturing the essence not only of chemistry, but of physics and biology.

In 1869, Dimitri Mendeleev discovered the Periodic System, and this year marks the 150th anniversary of the Periodic Table of Chemical Elements.

Explore this interactive Periodic Table to learn more about each element. Click on one to expand the information*.

*Information for this chart was provided by INL experts along with multiple online sources.