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2 ion, found in mercury(I) (mercurous) compounds. The existence of the metal–metal bond in Hg(I) compounds was established using X-ray studies in 1927 [2] [page needed] and Raman spectroscopy in 1934 [3] making it one of the earliest, if not the first, metal–metal covalent bonds to be characterised. Other mercury polycations are the linear ...
Mercury is a chemical element; ... is really the compound with the formula Hg 2 Cl 2, ... capped with a positive charge.
Mercury(I) oxide, also known as mercurous oxide, is an inorganic metal oxide with the chemical formula Hg 2 O. It is a brown/black powder, insoluble in water but soluble in nitric acid . With hydrochloric acid , it reacts to form calomel, Hg 2 Cl 2 . [ 4 ]
Mercury(I) chloride is the chemical compound with the formula Hg 2 Cl 2. Also known as the mineral calomel [4] (a rare mineral) or mercurous chloride, this dense white or yellowish-white, odorless solid is the principal example of a mercury(I) compound. It is a component of reference electrodes in electrochemistry. [5] [6]
Mercury(I) sulfate, commonly called mercurous sulphate or mercurous sulfate is the chemical compound Hg 2 SO 4. [3] Mercury(I) sulfate is a metallic compound that is a white, pale yellow or beige powder. [ 4 ]
Mercury(I) iodide was a commonly used as a drug in the 19th century, sometimes under the contemporary name of protiodide of mercury. It was used to treat a wide range of conditions; everything from acne to kidney disease and in particular was the treatment of choice for syphilis .
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Mercury(I) bromide or mercurous bromide is the chemical compound composed of mercury and bromine with the formula Hg 2 Br 2. It changes color from white to yellow when heated [ 1 ] and fluoresces a salmon color when exposed to ultraviolet light.