<unk>  (CaI2) is an ionic compound of calcium and iodine. It is highly soluble in water and it is deliquescent. It is a salt that is solid at room temperature, and it behaves as a typical ionic halide. Because of its hygroscopic nature, it must be kept in tightly-sealed containers. It is similar to calcium chloride in many respects. It is used in photography.
Calcium iodide
Potassium iodide
Cadexomer iodine
Cadmium iodide
Sodium fluoride
Calcium fluoride
Sodium selenite
Vamidothion