5/19/2023 0 Comments Iridium periodic tableIridium is obtained as a by-product of nickel and copper mining and refining. The largest reserves of iridium are located in South Africa, Russia, and Canada. It is primarily obtained from platinum ores and is found in association with other platinum-group metals. Iridium is one of the rarest elements on Earth, occurring at an average concentration of only 0.001 ppm in the Earth’s crust. Iridium is also used in electronics, jewelry, and as a catalyst in chemical reactions. Its most famous use is in the iridium layer found in the boundary between the Cretaceous and Paleogene geological periods, which provides evidence for the impact theory of the extinction of the dinosaurs. Since its discovery, iridium has found various applications in modern technology due to its unique properties. This process is still used today to extract iridium from its ores. In 1842, the French chemist Henri Sainte-Claire Deville developed a method to extract iridium from its oxide form by heating it with a mixture of potassium chloride and sodium fluoride. Tennant’s discovery was significant because it expanded the list of known elements and helped establish the field of analytical chemistry.ĭespite its discovery in 1803, it took almost 50 years for iridium to be isolated in its metallic form. He found that the remaining black powder contained two new elements, which he named iridium and osmium. Tennant discovered iridium while analyzing the residues left behind after dissolving platinum ore in a mixture of nitric and hydrochloric acids. The history of iridium dates back to the early 19 th century, when it was first discovered in 1803 by the English chemist Smithson Tennant. Learn how to write: Iridium electron configuration Named after Iris, Greek goddess of rainbow Iridium location on periodic tableIridium is found in the ninth column of the periodic table, next to the osmium element.
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