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Mercury(II) oxide, also called mercuric oxide or simply mercury oxide, is the inorganic compound with the formula Hg O. It has a red or orange color. Mercury(II) oxide is a solid at room temperature and pressure. The mineral form montroydite is very rarely found.
Mercury batteries use either pure mercury(II) oxide (HgO)—also called mercuric oxide—or a mixture of HgO with manganese dioxide (MnO 2) as the cathode.Mercuric oxide is a non-conductor, so some graphite is mixed with it; the graphite also helps prevent collection of mercury into large droplets.
Mercury oxide can refer to: Mercury(I) oxide (mercurous oxide), Hg 2 O; Mercury(II) oxide (mercuric oxide), HgO; See also
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 ]
Crystals of mercury(II) sulfide and several other mercury compounds are deeply colored red, but have no publicly known use in nuclear weapons.. Red mercury is a discredited substance, most likely a hoax perpetrated by con artists who sought to take advantage of gullible buyers on the black market for arms. [1]
Red Precipitate. Red Mercuric Oxide, known as Peroxide of Mercury, and Red Precipitate, has the formula HgO, and the molecular weight, 216.6. No pharmacopoeia gives a process for making it. On a large scale it is made by heating mercuric nitrate or mercuric nitrate and mercury, until the acid vapors are driven off.
Tetrakis(acetoxymercurio)methane is an an organomercury compound with the formula formula C(HgO 2 CCH 3) 4. [1] It was obtained in the investigation of Hofmann's base, an ill-defined yellowish material produced by treatment of mercuric oxide with base in ethanol. [2] Hofmann's base was once thought to have the formula C 2 Hg 6 (OH) 2.
Inorganic mercury compounds or mercury salts, more commonly found in nature, include mercuric sulphide (HgS), mercuric oxide (HgO) and mercuric chloride (HgCl 2). Most of these are white powders or crystals, except for mercuric sulphide which is red and turns black after exposure to light.