Each chloride ion in the diagram is bonded to only one sodium ion.

A sodium ion is only bonded to the chloride ion it donated its electron to.

A sodium atom can only form one ionic bond, because it only has one electron in its outer shell to donate.

The reason a bond is formed between chloride ions and sodium ions is because an electron has been transferred between them.

In the diagram a chloride ion is attracted to one sodium ion by a bond and is attracted to other sodium ions just by forces.

In the diagram each molecule of sodium chloride contains one sodium ion and one chloride ion.

An ionic bond is the attraction between a positive ion and a negative ion.

A positive ion will be bonded to any neighbouring negative ions.

Each sodium ion in the diagram is bonded to only one chloride ion.