Search results
Results From The WOW.Com Content Network
This is a list of prices of chemical elements.Listed here are mainly average market prices for bulk trade of commodities. Data on elements' abundance in Earth's crust is added for comparison.
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.
The other natural isotopes, 184 Os, and 186 Os, have extremely long half-life (1.12×10 13 years and 2×10 15 years, respectively) and for practical purposes can be considered to be stable as well. 187 Os is the daughter of 187 Re ( half-life 4.12×10 10 years) and is most often measured in an 187 Os/ 188 Os ratio.
Osmium(II) iodide is a black solid [35] produced by the reaction of osmium tetroxide and hydroiodic acid at 250 °C in nitrogen: [34] OsO 4 + HI → OsI 2 + H 2 O. This compound decomposes in contact with water. [35] Osmium(III) iodide is a black solid that is produced by heating hexaiodoosmic acid (H 2 OsI 6). [34] This compound is insoluble ...
Himalayan salt (coarse, ⌀ up to 5 mm) from Pakistan. This is a list of minerals, both metallic and non-metallic found in Pakistan province wise. Mining areas
Osmium borides are produced in vacuum or inert atmosphere to prevent formation of osmium tetroxide, which is a hazardous compound. Synthesis occurs at high temperatures (~1000 °C) from a mixture of MgB 2 and OsCl 3. [1]
Osmiridium-564562. Osmiridium and iridosmine are natural alloys of the elements osmium and iridium, with traces of other platinum-group metals.. Osmiridium has been defined as containing a higher proportion of iridium, with iridosmine containing more osmium.
Osmium heptafluoride is a possible inorganic chemical compound of osmium metal and fluorine with the chemical formula OsF 7 . [ 2 ] [ 3 ] It was first reported in 1966 by the reaction of fluorine and osmium at 600 °C and 400 atm, [ 4 ] but no purported synthesis could be reproduced in 2006, giving only osmium hexafluoride instead.