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...

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

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

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...

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...

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...

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...

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(III) bromide is a bromide of iridium(III), with the chemical formula of IrBr3. Iridium(III) bromide can be formed by reacting iridium(II) bromide...

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

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...

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

Iridium compounds are compounds containing the element iridium (Ir). Iridium forms compounds in oxidation states between −3 and +9, but the most common...

Iridium(IV) iodide is a binary chemical compound of iridium and iodide with the chemical formula IrI 4. Iridium(IV) iodide can be obtained by reacting...

Iridium(IV) fluoride is a chemical compound of iridium and fluorine, with the chemical formula IrF4 and is a dark brown solid. Early reports of IrF4 prior...

Iridium 33 was a communications satellite launched by Russia for Iridium Communications. It was launched into low Earth orbit from Site 81/23 at the Baikonur...

Iridium disulfide is the binary inorganic compound with the formula IrS2. Prepared by the direct reaction of the elements, the compound adopts the pyrite...

Iridium tetrachloride is an inorganic compound with the approximate formula IrCl4(H2O)n. It is a water-soluble dark brown amorphous solid. A well defined...

Iridium acetylacetonate is the iridium coordination complex with the formula Ir(O2C5H7)3, which is sometimes known as Ir(acac)3. The molecule has D3-symmetry...

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

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

Platinum–iridium alloys are alloys of the platinum group precious metals platinum and iridium. Typical alloy proportions are 90:10 or 70:30 (Pt:Ir). These...

Iridium(III) iodide is an iodide of iridium, with the chemical formula of IrI3. Iridium(III) iodide can be obtained by reducing iridium(IV) iodide with...

Iridium 7 was a U.S. Iridium communications satellite. It was launched into low Earth orbit from Vandenberg Air Force Base at 14:55 GMT on 5 May 1997,...

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

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

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...

Calliostoma iridium, common name the Panama rainbow top shell, is a species of sea snail, a marine gastropod mollusk in the family Calliostomatidae. The...

Iridium(III) sulfide is the inorganic compound with the formula Ir2S3. It is an insoluble black solid, prepared by heating a mixture of elemental iridium...