Osmium is a rare element and found in the Earth's crust.
Osmium Overview Osmium Melting Point 3054°C Discovery Discovered By: Smithson Tenant Year: 1804 Location: England State at 20 °C Solid Uses Used to tip gold pen points, instrument pivots, to make electric light filaments. Melting point – 3045 degree Celsius. alloys and pressure bearings. Osmium is two times denser than lead and a bit more dense than iridium. Very hard and resists corrosion better than any other.
Although solid osmium is unaffected by air at room temperature, the powder will give off osmium tetroxide, a strong oxidizer, highly toxic, with a characteristic odor (hence the metal's name). Toxic by inhalation and a strong irritant to the eyes and mucous membranes. Sources Obtained from the same ores as platinum.
Soluble in alcohol. Van der Waals radius – 0.136 nm. Osmium has the highest specific gravity and melting point of the platinum group metals; metallurgically unworkable Lewis, R.J., Sr (Ed.). The melting curve of osmium up to a pressure P of 500 GPa is obtained from an extensive suite of ab initio quantum molecular dynamics (QMD) simulations using the Z method. Boiling point – 5027 degree Celsius. Hawley's Condensed Chemical Dictionary.
13th ed. 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 slightly more dense than iridium, so osmium is often credited as being the Osmium has the lowest vapor pressure and highest melting point of the platinum group metals. Melting point: 3306 K (3033 ... Osmium (from Greek ὀσμή osme, "smell") is a chemical element with the symbol Os and atomic number 76. It is a lustrous metal which shines at high temperatures too. Used for high temp. Standard potential - + 0.85V. Physical Properties .
As secondary fixed points on ITS-90, the melting points of molybdenum and tungsten are 2895 K and 3687 K, respectively , while for tantalum a value of 3290 K is selected as an average of the determinations of 3291 ± 10 K (Rudy and Harmon ) and 3288 ± 10 K (Hiernaut et al ) after correcting the original melting point values to ITS-90.
Now let us begin with the physical properties. Osmium-rich ores include Osmiridium and Iridosmine of which the former is the most common.Osmium is also found in all ores of platinum. Melting Point: 3306 K (3033°C or 5491°F) Boiling Point: 5285 K (5012°C or 9054°F) Density: 22.57 g/cm 3: Ionization Energy: 8.7 eV: Oxidation States +4, +3: Occurrence. Melting point: 3045 °C: Period: 6: Boiling point: 5027 °C: Block: d: Density (g cm −3) 22.5872 : Atomic number: 76: Relative atomic mass: 190.23: State at 20°C: Solid : Key isotopes: 192 Os: Electron configuration [Xe]4f 14 5d 6 6s 2: CAS number: 7440-04-2 : ChemSpider ID: 22379: ChemSpider is a free chemical structure database Osmium tetroxide appears as a colorless or yellow solid with a pungent odor of chlorine.Begins to sublime below melting point.
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