What is Mercury(I) iodide?
'''Mercury(I) iodide''', also known as '''mercurous iodide''', is a [[chemical compound]]. Its [[chemical formula]] is Hg<sub>2</sub>I<sub>2</sub>. It has [[mercury (element)|mercury]] and [[iodide]] [[ion]]s in it. The mercury is in its +1 [[oxidation state]]. ==Properties== 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== It is made by reacting mercury and [[iodine]]. It was once used as a medicine. ==Related pages== *[[Mercury(I) chloride]] *[[Mercury(II) oxide]] *[[Mercury(II) chloride]] [[Category:Mercury compounds]] [[Category:Iodine compounds]] {{chem-stub}}