What are the characteristics of ionic bonds?

Ionic bonds are formed by both a cation and an anion. The bond is created when an atom loses an electron(s) and becomes a positive ion, known as a cation. Another atom is then able to gain the electron(s) to become a negative ion, known as an anion. For example, positively charged sodium ions and negatively charged chloride ions bond to form crystals of sodium chloride, creating a crystalline molecule with zero net charge. This process is known as electron transfer, as valence electrons are exchanged between two atoms. Ionic bonds are the strongest of all types of bonds. It takes a lot of energy to overcome this attraction in order for ions to move freely and form a liquid. These bonds have charge separation, and thus are the most reactive of all the bonds. Additionally, ionic bonds have high melting and boiling points. For example, NaCl has a melting point of 800°C. These bonds are also good conductors of electricity once dissolved or melted, as the ions can move about freely.