Standard atomic weights, those numbers emblazoned under the elements on the periodic table, were once thought of as unchanging constants of nature. But researchers have tweaked the atomic weights of ...

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 ...

A new tool at the Department of Energy's Lawrence Berkeley National Laboratory (Berkeley Lab) will be taking on some of the periodic table's latest heavyweight champions to see how their masses ...

The recent discovery of elements 113 and 115 will tell us more about the structure of the nucleus and the possible existence of the “island of stability”. The heaviest elements The periodic table of ...