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 ...

An alternative periodic table of elements focusing on highly charged ions reveals new science that could support the quest for more accurate optical atomic clocks By Chris Simms 28 April 2025 ...

In other words, it contains elements not on the periodic table at all. These elements would be stable around atomic number 164, which is far denser that Osmium, the densest known naturally ...

Key Concepts The periodic table is a chart containing information about the atoms that make up all matter. An element is a substance made up of only one type of atom. The atomic number of an atom is ...

A new study lays the groundwork to expand the periodic table with a search for element 120, to be made by slamming electrically charged titanium atoms, or ions, into a californium target.

Unstable decay This graphic plots the life spans, or half-lives, of the periodic table’s unstable elements (blue) on a logarithmic scale. Data for each element’s longest-lived form, or isotope ...

The periodic table traditionally taught in textbooks, which organizes elements based on chemical traits such as reactivity, places helium in the rightmost column with the other less reactive elements.