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Iridium is a chemical element; it has symbol Ir and atomic number 77. A very hard, ... Iridium pentafluoride is also a strong oxidant, but it is a tetramer, Ir 4 F
Iridium hexafluoride, IrF 6, is a volatile yellow solid, composed of octahedral molecules. It decomposes in water and is reduced to IrF 4,. [2] Iridium pentafluoride is also a strong oxidant, but it is a tetramer, Ir 4 F 20, formed by four corner-sharing octahedra. [2]
Alloy: mainly platinum and iridium, plus several other known metals (including iron, cobalt, and copper) and unidentified matter. SCP-148 (or "telekill") has a passive effect that negates extrasensory perception. Long exposure causes communication disorders; extensive overexposure leads to complete aphasia with no visible signs of brain damage.
While lists of noble metals can differ, they tend to cluster around gold and the six platinum group metals: ruthenium, rhodium, palladium, osmium, iridium, and platinum. In addition to this term's function as a compound noun , there are circumstances where noble is used as an adjective for the noun metal .
Iridium-192 is normally produced by neutron activation of natural-abundance iridium metal. [13] Iridium-192 is a very strong gamma ray emitter, with a gamma dose-constant of approximately 1.54 μSv·h −1 ·MBq −1 at 30 cm, and a specific activity of 341 TBq·g −1 (9.22 kCi·g −1).
Iridium-192 is normally produced by neutron activation of natural-abundance iridium metal. [3] Iridium-192 is a very strong gamma ray emitter, with a gamma dose-constant of approximately 1.54 μSv·h −1 ·MBq −1 at 30 cm, and a specific activity of 341 TBq·g −1 (9.22 kCi·g −1).
Intelsat (I) expects the Chapter 11 bankruptcy protection funding to help it stay afloat until billions of dollars are made available through public auctioning of its C-band spectrum later this year.
Organoiridium compounds share many characteristics with those of rhodium, but less so with cobalt. Iridium can exist in oxidation states of -III to +V, but iridium(I) and iridium(III) are the more common. iridium(I) compounds (d 8 configuration) usually occur with square planar or trigonal bipyramidal geometries, whereas iridium(III) compounds (d 6 configuration) typically have an octahedral ...