Students could use beads, sweets, balls or themselves to build models of the positions of particles in the atoms of different elements.

Atoms can form strong bonds with each other, making molecules. Symbols and formulae Letters from the alphabet are used to represent chemical elements. An element’s chemical symbol is a single ...

Researchers at the Karlsruhe Institute of Technology (KIT) have synthesized a Bi5⁻ ring, a molecule with five bismuth atoms, ...

The positive and negative ions attract each other and form the ionic compound sodium chloride. One calcium and two chlorine atoms are near each other. An electron from each atom feels the attraction ...

Examples abound of rings that feature multiple nitrogen atoms—the lightest ... found in antifungal compounds. But making similar heterocycles from heavier pnictogen elements like antimony ...