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Osmium (from Ancient Greek ὀσμή (osmḗ) 'smell') is a chemical element; it has symbol Os and atomic number 76. It is a hard, brittle, bluish-white transition metal in the platinum group that is found as a trace element in alloys, mostly in platinum ores. Osmium is the densest naturally occurring element.
Osmium(I) iodide is a metallic grey solid produced by the reaction of osmium tetroxide and hydroiodic acid heated in a water bath for 48 hours in a carbon dioxide atmosphere. It is an amorphous compound. [34] Osmium(II) iodide is a black solid [35] produced by the reaction of osmium tetroxide and hydroiodic acid at 250 °C in nitrogen: [34]
when liquid (at m.p.) 20 g/cm 3 ... Spectral lines of osmium: Other properties; Natural occurrence: primordial: Crystal structure
Pages in category "Osmium compounds" The following 26 pages are in this category, out of 26 total. This list may not reflect recent changes. ...
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Osmium oxide may refer to: Osmium dioxide, OsO 2; Osmium tetroxide, OsO 4 This page was last edited on 4 March 2021, at 20:47 (UTC). Text is available under the ...
Osmium pentacarbonyl is the organoosmium compound with the formula Os(CO) 5.It is the simplest isolatable carbonyl complex of osmium. Osmium pentacarbonyl is a colorless volatile liquid that is obtained by treating solid triosmium dodecacarbonyl under 200 atmospheres of carbon monoxide at 280-290 °C.
Mercury is the heaviest liquid at room temperature. But the heaviest liquid irrespective of temperature is liquid osmium (a rare metal) at its melting point (3033°C/5491.4°F), with a density of 22.59 g·cm −3, 1.65 times as heavy as mercury. [4]