Mercury(I) iodide
Mercury(I) iodide, also known as mercurous iodide, is a chemical compound. Its chemical formula is Hg2I2. It has mercury and iodide ions in it. The mercury is in its +1 oxidation state.
Properties[change]
It is a yellow solid. When light is shined on it, it breaks down (by disproportionation) to mercury(II) iodide and iodine. It is toxic, as are all mercury compounds.
Preparation and use[change]
It is made by reacting mercury and iodine. It was once used as a medicine.
