CHLORINE (symbol Cl, atomic weight 35.46 (0=16), a gaseous chemical element of the halogen group, taking its name from the colour, greenish-yellow (Gr. 0 Three oxides are known: chlorine monoxide, Cl 2 0, chlorine peroxide, C102, and chlorine heptoxide, C1207. Ionic conductivity can arise due to point defects within an ionic material. The two main types are Schottky and Frenkel defects. Schottky defects occur when a pair of ions leave the structure and vacant sites remain. This allows conductivity to occur in sodium chloride as well as in lead(IV) oxide in fluorite structures. Sodium chloride (NaCl) is made from a metal (sodium) and nonmetal (chloride), making it an ionic compound. When ionic compounds dissolve in water, the ion-dipole attractions between the ions and ... Learn how to use the molecular equation to write the complete ionic and net ionic equations for a reaction occurring in aqueous solution.