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Iridium is one of the characteristic elements of extraterrestrial rocks, and, along with osmium, can be used as a tracer element for meteoritic material in sediment. [ 71 ] [ 72 ] For example, core samples from the Pacific Ocean with elevated iridium levels suggested the Eltanin impact of about 2.5 million years ago.
The blue plaque for Smithson Tennant in Finkle Street, Selby, North Yorkshire. Smithson Tennant FRS (30 November 1761 [1] – 22 February 1815 [2]) was an English chemist.He is best known for his discovery of the elements iridium and osmium, which he found in the residues from the solution of platinum ores in 1803.
Print/export Download as PDF; Printable version; In other projects ... Pages in category "Iridium" The following 9 pages are in this category, out of 9 total.
As of 1 Jan 2023, elements E119 and higher are not discovered. These are called theoretical elements. They can have article and other content pages though. Incidentally, this concerns period 8 completely. For the Infobox <element>, their redirected pages do not count (are treated as: "R page does not exist").
Group 9, by modern IUPAC numbering, [1] is a group (column) of chemical elements in the d-block of the periodic table. Members of Group 9 include cobalt (Co), rhodium (Rh), iridium (Ir) and meitnerium (Mt). [2] These elements are among the rarest of the transition metals. [3]
Interesting Facts for Kids. 66. Scotland's national animal is a unicorn. 67. Tigers have striped skin, not just striped fur. 68. A shrimp’s heart isn’t in its chest; it’s located near the ...
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Iridium 77 Ir 192.22: Platinum 78 Pt 195.08: Gold 79 Au 196.97: Mercury 80 Hg 200.59: Thallium 81 Tl 204.38: Lead 82 Pb 207.2: Bismuth 83 Bi 208.98: Polonium 84 Po [209] Astatine 85 At [210] Radon 86 Rn [222] 7: Francium 87 Fr [223] Radium 88 Ra [226] Lawrencium 103 Lr [266] Rutherfordium 104 Rf [267] Dubnium 105 Db [268 ...