What is Mercury(I) fluoride?
'''Mercury(I) fluoride''', also known as '''mercurous fluoride''', is a [[chemical compound]]. Its chemical formula is Hg<sub>2</sub>F<sub>2</sub>. It has [[mercury (element)|mercury]] and [[fluoride]] [[ion]]s in it. The mercury is in its +1 [[oxidation state]]. ==Properties== Mercury(I) fluoride is a light yellow solid. It evaporates at 240°C. It turns black when light is shined on it. It reacts with water to make mercury metal, [[mercury(II) oxide]], and [[hydrofluoric acid]]. It is highly [[toxic]]. ==Preparation== It is made by reacting mercury(I) carbonate with hydrofluoric acid. ==Related pages== *[[Mercury(II) fluoride]] *[[Mercury(I) chloride]] [[Category:Mercury compounds]] [[Category:Fluorine compounds]] {{Fluorine compounds}}