In this video excerpt from NOVA's "Hunting the Elements," New York Times technology columnist David Pogue investigates chemical reactions involving sodium. Find out how the electron configuration of ...

The number of electrons in the element's outer shell hugely influences reactivity. If the outer electron shell is full then an additional chemical bond cannot be formed because there is no room. Inert ...

Eric Scerri, a UCLA chemistry lecturer, has written at least six books discussing the orientation of the periodic table. His office is cluttered with posters and three-dimensional models of different ...

Fluorine is the most chemically reactive element on the periodic table. Only one isotope of fluorine occurs naturally. Researchers discovered a new isotope with four neutrons removed from the proton ...

IN the course of an investigation into servo circuits and self-balancing systems in general I had opportunity to examine the effect of reactive elements in the negative feedback networks of electronic ...