Mendeleev’s introduction of the periodic table of elements is one of the most important milestones in the history of chemistry, as it brought order into the known chemical and physical behaviour of ...

Electrons can extend our view of microscopic objects well beyond what's possible with visible light—all the way to the atomic scale. A popular method in electron microscopy for looking at tough, ...

In this video excerpt from NOVA's "Hunting the Elements," New York Times technology columnist David Pogue examines how atomic structure determines reactivity. Meet Theo Gray, chemist and author, who ...

In atomic physics and quantum chemistry, the electron configuration is the arrangement of electrons in an atom, molecule, or other physical structure (e.g., a crystal). Like other elementary particles ...

This video explores the fascinating reasons behind the physical properties of elements. It answers questions about why mercury is a liquid at room temperature, why gold has its distinctive yellow ...

How to find valence electrons? Valence electrons are the outermost electrons in an atom, crucial for determining its chemical properties and reactivity. This article explains how to find valence ...

Scientists have developed a new imaging technique, tested on samples of nanoscale gold and carbon, that greatly improves images of light elements using fewer electrons. The technique can reveal ...