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This toxic compound is formed when powdered osmium is exposed to air. It is a very volatile, water-soluble, pale yellow, crystalline solid with a strong smell. Osmium powder has the characteristic smell of osmium tetroxide. [31] Osmium tetroxide forms red osmates OsO 4 (OH) 2− 2 upon reaction with a base. With ammonia, it forms the nitrido ...
Osmium compounds are compounds containing the element osmium ... Its volatility, along with its strong oxidizing power, is the origin of its quite serious toxicity ...
Elastic properties describe the reversible deformation (elastic response) of a material to an applied stress.They are a subset of the material properties that provide a quantitative description of the characteristics of a material, like its strength.
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Osmium(VIII) oxide is also used as a stain for lipids in optical microscopy. [26] OsO 4 also stains the human cornea (see safety considerations). A sample of cells fixed/stained with osmium tetroxide (black) embedded in epoxy resin (amber). The cells are black as a result of the effects of osmium tetroxide.
There, close-packed Re layers alternate with puckered triangular boron layers along the (001) plane. This can be seen above on the example of osmium diboride. The density of states for ReB 2 has one of the lowest values among the metal borides, indicating strong covalent bonding and high hardness. [47]
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Osmium borides are compounds of osmium and boron. Their most remarkable property is potentially high hardness. Their most remarkable property is potentially high hardness. It is thought that a combination of high electron density of osmium with the strength of boron-osmium covalent bonds will make osmium borides superhard materials , however ...