Atoms that share pairs of electrons form molecules ... force of attraction between the oppositely charged ions - a positively charged metal ion and a negatively charged non-metal ion.

The metal ions form nodes that bind the arms of the linkers together to form a repeating ... (Image: KAIST) By making the MOF from different metal atoms and organic linkers, researchers can create ...

A small piece of sodium metal is placed in a flask of chlorine gas ... The positive and negative ions attract each other and form the ionic compound sodium chloride. One calcium and two chlorine atoms ...

A positive sign is added to the symbol for sodium, Na +. Ions with greater charge include a number in their symbol, for example Al 3+ (which has three positive charges).