Cadmium iodide is a chemical compound. Its chemical formula is CdI2. It has cadmium and iodide ions in it.
Cadmium iodide crystal structure
Cadmium iodide is a white or pale yellow solid. It is known for its crystal structure. Many other chemical compounds have a cadmium iodide crystal structure. It easily dissolves in water. It is toxic.
It is made by reacting cadmium with iodine. It can also be made by reacting cadmium, or cadmium oxide with hydriodic acid.
Cadmium iodide is used to make phosphors (things that light when struck by UV light), photography, and electroplating.
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The iodide anions in CdI2 form a hexagonal close-packed lattice, while the cadmium cations occupy all of the octahedral holes in alternating layers.