Carolyn Krause presents the second part of the three-part series on the Oak Ridge National Laboratory's role in the discovery of elements in the periodic table. Many of them have been synthesized ...

What comes to mind when you think about isotopes? Radioactivity, perhaps? That’s only the tip of the iceberg. A new interactive periodic table of the elements and isotopes, launched last month by the ...

On the periodic table, most elements have at least one stable form. But others have only unstable forms, all of which decay by emitting radiation and transforming into different elements until ...

Like everything we see in the world, isotopes are a type of atom, the smallest unit of matter that retains all the chemical properties of an element. Isotopes are forms of a chemical element with ...

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, they ...

Brigitte Van Tiggelen is a historian of chemistry and director for European operations at the Science History Institute, Philadelphia, Pennsylvania, USA. She is co-editor of the forthcoming book Women ...