Here we have the periodic table showing only the valence, or outer electrons in each element. It is these outermost electrons that determine an element’s reactivity. Some patterns should stand out.

Principles of protein complex assembly have been codified in a periodic table that shows descriptive and predictive power.

The media resources below allow educators to explore the periodic table in detail with their students—from its basic structure and properties to the sometimes volatile behavior of specific elements.

2019 is the International Year of the Periodic Table. The person who typically gets credit for its creation is Dimitri Mendeleev. But there were many more chemists who should be recognized.

In an unprecedentedly precise accelerator experiment, researchers directly observed how some of the heaviest known elements ...

Periodic table Mendeleev’s periodic law has undergone certain changes and been complemented by new elements, including artificially synthesized ones.

Mathematicians are creating their own version of the periodic table that will provide a vast directory of all the possible shapes in the universe across three, four and five dimensions, linking ...

150 years ago, Russian chemist Dmitrii Mendeleev created the periodic table of the elements, revolutionizing chemistry.

At the far end of the periodic table is a realm where nothing is quite as it should be. The elements here, starting at atomic number 104 (rutherfordium), have never been found in nature. In fact ...