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...

The Iridium satellite constellation provides L band voice and data information coverage to satellite phones, satellite messenger communication devices...

Iridium Communications Inc. (formerly Iridium Satellite LLC) is a publicly traded American company headquartered in McLean, Virginia, United States. Iridium...

Look up Iridium or iridium in Wiktionary, the free dictionary. Iridium is a chemical element with symbol Ir and atomic number 77. Iridium may also refer...

than positive magnitudes, i.e. the scale is reverse logarithmic . The Iridium constellation was one of the first anthropogenic sources of near-space...

There are two natural isotopes of iridium (77Ir), and 37 radioisotopes, the most stable radioisotope being 192Ir with a half-life of 73.83 days, and many...

Iridium-192 (symbol 192Ir) is a radioactive isotope of iridium, with a half-life of 73.827 days. It decays by emitting beta (β) particles and gamma (γ)...

Iridium hexafluoride, also iridium(VI) fluoride, (IrF6) is a compound of iridium and fluorine and one of the seventeen known binary hexafluorides. It is...

Iridium fluoride may refer to: Iridium(III) fluoride, IrF3 Iridium(IV) fluoride, IrF4 Iridium(V) fluoride, IrF5 Iridium(VI) fluoride, IrF6, or iridium...

Iridium trifluoride is a binary chemical compound of iridium and fluorine with the chemical formula IrF 3. Reduction of iridium hexafluoride by metallic...

iridium(I), which has the formula IrCl(CO)[P(C6H5)3]2. This square planar diamagnetic organometallic complex consists of a central iridium atom bound...

Iridium(III) chloride is the inorganic compound with the formula IrCl3. The anhydrous compound is relatively rare, but the related hydrate is much more...

Iridium chloride is a group of inorganic chemical compounds of iridium metal and chlorine. The term can refer to: Iridium(III) chloride (iridium trichloride)...

The term iridium anomaly commonly refers to an unusual abundance of the chemical element iridium in a layer of rock strata at the Cretaceous–Paleogene...

Iridium tetrabromide is a binary inorganic chemical compound of iridium and bromine with the chemical formula IrBr4. This is a salt of iridium metal and...

been carried out to confirm that it behaves as the heavier homologue to iridium in group 9 as the seventh member of the 6d series of transition metals...

a density of 22.59 g/cm3. Manufacturers use its alloys with platinum, iridium, and other platinum-group metals to make fountain pen nib tipping, electrical...

The six platinum-group metals are ruthenium, rhodium, palladium, osmium, iridium, and platinum. They have similar physical and chemical properties, and...

a review of morphologic correlates and of some conditions that affect iridial pigmentation throughout life". Survey of Ophthalmology. 41 (Suppl 2): S117–23...

Iridium bromide may refer to: Iridium(IV) bromide (iridium tetrabromide), OsBr4 Iridium(III) bromide (iridium tribromide), OsBr3 This set index article...

Cyclooctadiene iridium methoxide dimer is an organoiridium compound with the formula Ir2(OCH3)2(C8H12)2, where C8H12 is the diene 1,5-cyclooctadiene....

Iridium(IV) oxide, IrO2, is the only well-characterised oxide of iridium. It is a blue-black solid. The compound adopts the TiO2 rutile structure, featuring...

"SpaceX Returns To Flight with Iridium NEXT launch – and landing". NASASpaceFlight.com. Retrieved 4 February 2017. "Iridium Adds Eighth Launch with SpaceX...

periodic table. Members of Group 9 include cobalt (Co), rhodium (Rh), iridium (Ir) and meitnerium (Mt). These elements are among the rarest of the transition...

Iridium(II) chloride is an inorganic chemical compound of iridium metal and chlorine with the chemical formula IrCl2. This is a metal salt of iridium...

Sinus Iridum /ˈsaɪnəs ˈɪrɪdəm/ (Latin sinus īridum "Bay of Rainbows") is a plain of basaltic lava that forms a northwestern extension to the Mare Imbrium...

Iridium tetroxide (IrO4, Iridium(VIII) oxide) is a binary compound of oxygen and iridium in oxidation state +8. This compound was formed by photochemical...

Cyclooctadiene iridium chloride dimer is an organoiridium compound with the formula [Ir(μ2-Cl)(COD)]2, where COD is the diene 1,5-cyclooctadiene (C8H12)...

Organoiridium chemistry is the chemistry of organometallic compounds containing an iridium-carbon chemical bond. Organoiridium compounds are relevant to many important...

February 10, 2009, two communications satellites—the active commercial Iridium 33 and the derelict Russian military Kosmos 2251—accidentally collided...