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 ...

A collaboration between C&EN and Andy Brunning, chemistry educator and author of the popular graphics blog Compound Interest. To see more of Brunning’s work, go to compoundchem.com. Check out all of C ...

The periodic table is part of the bedrock of chemistry education. Students use it to look up values like an element’s atomic mass, and it serves as a visual reference for the trends in physical ...

The iconic chart of elements has served chemistry well for 150 years. But it’s not the only option out there, and scientists are pushing its limits. By Siobhan Roberts When Sir Martyn Poliakoff, a ...

“The periodic table tells us a story – its aim to understand the essence of all things,” said UNESCO Director General Audrey Azoulay in her introductory speech at the opening ceremony of the ...

The heaviest element that humans have ever found is called oganesson. Each atom of the stuff packs a whopping 118 protons into its dense center. In contrast, hydrogen—the most abundant element in the ...

The periodic table of elements stands as one of the most significant achievements in the history of science, offering a ...

Life on Earth rests on a knife-edge of chemistry that could easily have tipped the other way. As geochemists reconstruct the planet’s birth, they are finding that a narrow band of oxygen conditions ...