When an atom loses or gains an electron, it is called an ion ... This two-part activity will help students see the relationship between the arrangement of ions in a model of a sodium chloride crystal ...

The reaction releases a lot of heat as the ionic compound sodium chloride is formed. A sodium and chlorine atom are near each other. An electron from each atom feels the attraction from the other atom ...

Ionic bonds are formed between a metal and non-metal, for example, sodium chloride. Outer electrons ... For example Magnesium (Mg) has the electron arrangement 2,8,2. To become stable it must ...

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 ...