What is Sodium iodide?
[[File:Sodium iodide.jpg|thumb|Sodium iodide]] '''Sodium iodide''' is a [[chemical compound]]. It is composed of [[sodium]] and [[iodide]] [[ion]]s. The chemical formula is NaI. It is a white [[crystalline]] solid. It is a weak [[reducing agent]]. When it is exposed to [[oxygen]] in the air, it turns yellow-brown. It does this because some of the [[iodide]] was [[oxidation|oxidized]] to [[iodine]]. It is used to supply iodine to the human body. ==Related pages== *[[Sodium fluoride]] *[[Sodium bromide]] *[[Sodium chloride]] {{chem-stub}} [[Category:Sodium compounds]] [[Category:Iodine compounds]]