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The density of osmium is slightly greater than that of iridium; the two are so similar (22.587 versus 22.562 g/cm 3 at 20 °C) that each was at one time considered to be the densest element. Only in the 1990s were measurements made accurately enough (by means of X-ray crystallography ) to be certain that osmium is the denser of the two.
New York: The International Nickel Company, Inc., 1941: 16. — "Values ranging from 21.3 to 21.5 gm/cm 3 at 20 °C have been reported for the density of annealed platinum; the best value being about 21.45 gm/cm 3 at 20 °C." 21.46 g/cm 3 — Rose, T. Kirke. The Precious Metals, Comprising Gold, Silver and Platinum. New York: D. Van Nostrand ...
Crystals of osmium, a heavy metal nearly twice as dense as lead [1] Part of a series on the: ... Heavy metals can degrade air, water, and soil quality, ...
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]
Osmium is the densest known element ... Thus a relative density less than one relative to water means that the substance floats in water. The density of a material ...
where g is the local acceleration due to gravity, V is the volume of the sample and of water (the same for both), ρ sample is the density of the sample, ρ H 2 O is the density of water, W V represents a weight obtained in vacuum, is the mass of the sample and is the mass of an equal volume of water. The density of water and of the sample ...
Density: 4.38 g/cm 3: Melting point: 450 °C (842 °F; 723 K) ... chloride or osmium dichloride is an inorganic compound ... Osmium(II) chloride is a hygroscopic dark ...
Hassium is expected to be one of the densest of the 118 known elements, with a predicted density of 27–29 g/cm 3 vs. the 22.59 g/cm 3 measured for osmium. [ 6 ] [ 7 ]