The periodic table of chemical elements, often called the periodic table, organizes all discovered chemical elements in rows (called periods) and columns (called groups) according to increasing atomic ...

Jadarite—commonly known as kryptonite due to its chemical similarity to the mineral bane of Superman—has only every been ...

Our Concept of the Chemical Element Modified by Study of Radio-Active Change. Skip to main content. Scientific American. August 2, 1919. 5 min read. What is a Chemical Element?

Can you name everything from Ac to Zr? Test your knowledge of the periodic table and see if you can top the leaderboard ...

Discover the history, structure, and importance of the periodic table of elements, from Mendeleev’s discovery to modern scientific applications.

One such element is Promethium, and a new study from scientists at Oak Ridge National Laboratory has successfully analyzed chemical properties of the rare earth metal some 80 years after its ...

The noble gases are the chemical elements in group 18 of the periodic table. They are the most stable due to having the maximum number of valence electrons their outer shell can hold. Therefore ...

Learn about elements, compounds and mixtures in this KS3 Chemistry guide from BBC Bitesize.

Each element is distinguished by the number of protons, neutrons and electrons that it possesses. The atoms of each chemical element have a defining and same number of protons and electrons, but – ...

The chemical analyses were conducted by Professor Emeritus and expert in archaeometry, Kaare Lund Rasmussen from the Department of Physics, Chemistry, and Pharmacy, University of Southern Denmark.