Osmium (from Ancient Greek ὀσμή (osmḗ) 'smell') is a chemical element with the 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. When experimentally measured using X-ray crystallography, it has a density of 22.59 g/cm . Manufac… Web15 feb. 2024 · Because of its density, osmium is often alloyed with other precious metals to make products such as instrument pivots, phonograph needles, and electrical contacts. When naturally combined with iridium, it is used in fountain pen tips. Osmium metal is sometimes added to platinum or indium to make them harder.
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WebOsmium has only a few uses. It is used to produce very hard alloys for fountain pen tips, instrument pivots, needles and electrical contacts. It is also used in the chemical industry … Web20 jul. 1998 · It has been used chiefly as a hardener in alloys of the platinum metals, though ruthenium has generally replaced it. A hard alloy of osmium and iridium was used for tips of fountain pens and phonograph needles, and osmium tetroxide is used in certain organic … periodic table, in full periodic table of the elements, in chemistry, the organized … osmium, Metallic chemical element, chemical symbol Os, atomic number 76. … Other articles where osmium-186 is discussed: osmium: 02 percent), … Take these quizzes at Encyclopedia Britannica to test your knowledge on a … iridosmine, also called Osmiridium, mineral consisting of an alloy of iridium and a … aqua regia, mixture of concentrated nitric and hydrochloric acids, usually one part … Other articles where Smithson Tennant is discussed: William Hyde Wollaston: … ruthenium (Ru), chemical element, one of the platinum metals of Groups 8–10 … cultural events in cleveland
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Webalmost entirely used to produce very hard alloys with other metals of the platinum group, for fountain pen tips, instrument pivots, and electrical contacts. OsO 4 is used to detect fingerprints and to stain fatty tissue for microscope slides. platinum/osmium 90/10 alloy is used in implants such as pacemakers and replacement valves. Key properties. WebOsmium tetroxide (also osmium (VIII) oxide) is the chemical compound with the formula OsO 4. The compound is noteworthy for its many uses, despite its toxicity and the rarity of osmium. It also has a number of unusual properties, one being that the solid is volatile. The compound is colourless, but most samples appear yellow. [5] WebOsmium alloy is used for fountain pen points, with the alloy called osmiridium when osmium is predominant and iridosmine when iridium is predominant. The most important thing for a fountain pen is that it feels smooth when writing, which requires a suitable resilience and smoothness of the pen tip. With excellent acid resistance and wear ... eastlex 10901