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See all on WikipediaIridium - Wikipedia
Iridium is a chemical element; it has symbol Ir and atomic number 77. A very hard, brittle, silvery-white transition metal of the platinum group, it is considered the second-densest naturally occurring metal (after osmium) with a density of 22.56 g/cm (0.815 lb/cu in) as defined by experimental X-ray crystallography. Ir and … See more
Physical properties
A member of the platinum group metals, iridium is white, resembling platinum, but with a slight … See more
Platinum group
The discovery of iridium is intertwined with that of platinum and the other metals of the platinum group. The first European reference to platinum … See moreWorldwide production of iridium was about 7,300 kilograms (16,100 lb) in 2018. The price is high and varying (see table). Illustrative factors that affect the price include oversupply of … See more
Iridium in bulk metallic form is not biologically important or hazardous to health due to its lack of reactivity with tissues; there are only about 20 parts per trillion of iridium in human tissue. Like most metals, finely divided iridium powder can be hazardous to … See more
Oxidation states
Iridium forms compounds in oxidation states between −3 and +9, but the most common oxidation … See moreAlong with many elements having atomic weights higher than that of iron, iridium is only naturally formed by the r-process (rapid neutron capture) in neutron star mergers and … See more
Due to iridium's resistance to corrosion it has industrial applications. The main areas of use are electrodes for producing chlorine and other … See more
Wikipedia text under CC-BY-SA license Iridium Satellite Communications | Your World. Our …
WEBIridium is a global satellite communications company, providing access to voice and data services anywhere on Earth. With its constellation of satellites, Iridium’s network connects people and devices in the world’s …
Iridium | Definition, Properties, & Uses | Britannica
WEBSep 28, 2024 · Iridium, chemical element, one of the platinum metals of Groups 8–10 (VIIIb), Periods 5 and 6, of the periodic table. It is very dense and rare and is used in platinum alloys. A precious, silver-white metal, …
Iridium - Element information, properties and uses | Periodic Table
WEBIridium is the most corrosion-resistant material known. It is used in special alloys and forms an alloy with osmium, which is used for pen tips and compass bearings. It was …
Interesting reads - Iridium
Powered by Microsoft StartFacts About Iridium - Live Science
- Iridium is a member of the platinum family and is white in color with a yellowish hue. It has a density of 22.65 grams per cubic centimeter. By comparison, the density of lead is 11.34 g/cm3 and the density of iron is 7.874 g/cm3. Iridium is not affected by acids, bases, or most other strong chemicals, according to Chemistry Explained. That propert...
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Comprehensive Guide to Iridium: Properties, Uses, and Applications
WEBExplore the fascinating world of iridium, a rare and valuable element in the platinum group. Discover its unique physical and chemical properties, historical background, and diverse …
Iridium Facts - Periodic Table of the Elements
WEBJan 10, 2020 · A member of the platinum family, iridium is white like platinum, but with a slight yellowish cast. The metal is very hard and brittle and is the most corrosion-resistant metal known. Iridium is not attacked …
Iridium Element Facts - chemicool.com
WEBIridium is a rare, hard, lustrous, brittle, very dense platinum-like metal. Chemically it is very unreactive. It is the most corrosion-resistant metal known and it resists attack by any acid. Iridium is attacked by molten …
Iridium (Ir) - Periodic Table
WEBIridium is the 77th element in the periodic table and has a symbol of Ir and atomic number of 77. It has an atomic weight of 192.217 and a mass number of 193. Iridium has seventy …
Iridium - Periodic Table
WEBIridium is a transition metal with the atomic number 77 and the symbol Ir. It is the most corrosion-resistant metal known and has various applications in high-temperature equipment, platinum alloys, and …
Metal Profile: Iridium - ThoughtCo
WEBAug 21, 2020 · Iridium is a hard, brittle, and lustrous platinum group metal (PGM) that is very stable at high temperatures as well as in chemical environments. Properties. Atomic Symbol: Ir. Atomic Number: 77. …
Iridium | History, Uses, Facts, Physical & Chemical Characteristics
WEBIridium is a whitish silver transition metal. It is brittle solid at standard temperature and pressure. It is a significantly dense metal and is considered as the 2 nd densest element …
Periodic Table of Elements: Los Alamos National Laboratory
WEBIridium is a white metal of the platinum family, very hard, brittle and corrosion-resistant. It is used for coating optical lenses, making crucibles, electrical contacts and …
Iridium (Ir) - ChemicalAid
WEBIridium (Ir) has an atomic mass of 77. Find out about its chemical and physical properties, states, energy, electrons, oxidation and more.
WebElements Periodic Table » Iridium » the essentials
WEBIridium is a precious metal with the symbol Ir and atomic number 77. It is very hard, brittle, corrosion resistant, and has a slight yellowish cast. Learn about its properties, …
Iridium's impact - Nature Chemistry
WEBMar 22, 2016 · It is one of the least abundant elements in the Earth's crust — about forty times less abundant than gold. It is thought to have sunk to the Earth's core during the …
Iridium | Ir (Element) - PubChem
WEBIridium is a chemical element with symbol Ir and atomic number 77. Classified as a transition metal, Iridium is a solid at room temperature.
Iridium (Ir) - Periodic Table
WEBIridium is a hard, brittle, silvery-white transition metal of the platinum group with the highest density and corrosion resistance. It was discovered in 1803 by Smithson …
Iridium | Ir | CID 23924 - PubChem
WEBIridium | Ir | CID 23924 - structure, chemical names, physical and chemical properties, classification, patents, literature, biological activities, safety/hazards/toxicity information, …
Careers | Iridium Satellite Communications
WEBIridium’s talented employees are integral to the company’s continued growth and success. Start your journey with us today! Pursuing a bachelor’s or graduate degree? Check out …
In vitro electrical properties for iridium oxide versus titanium ...
WEBElectrochemical measurements indicated that iridium oxide had lower impedance and a higher charge storage capacity than titanium nitride, suggesting better performance as a …
IRIDIUMS - Satellites and Flares - ONLINE 3D REAL TIME …
WEBReflected ray that hits the ground generating the flare. Online 3D Satellite Tracking, with more than 15,000 satellites, pass and flare predictor. HD Images and video of the Earth …
List of orphan source incidents - Wikipedia
WEBFebruary 20, 1999 – Yanango, Peru – A welder picked up an iridium-192 source lost by an industrial radiographer working at a hydroelectric plant and placed it in his rear pants …
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