The layer of iridium-rich clay found worldwide is believed to be evidence for the asteroid impact that caused the extinction of the dinosaurs. Iridium is often used in the construction of devices that need to withstand extreme conditions, like the deep-sea probes that explore hydrothermal vents. Storage guidelines: Store in a cool, dry place away from reactive substances. Precautions to handle the element: Should be handled in a well-ventilated area, and direct contact with its compounds should be avoided. Toxicity levels: Iridium compounds are generally considered to be low in toxicity but can be toxic in large amounts. However, it is essential to note that iridium compounds can be toxic in large concentrations. While iridium doesn't have a biological role in humans or other organisms, its compounds have been studied for their antibacterial properties. This complex electron configuration, featuring a partially filled 5d subshell, gives iridium its unique chemical behavior, particularly its ability to form multiple oxidation states and to act as a catalyst in various chemical processes. Iridium has an electron configuration of 4f¹⁴ 5d⁷ 6s². Physical Properties Chemical Properties Electron Configuration The name "iridium" originates from the Latin word "iris," meaning rainbow, due to the various colors of its compounds. Tennant found iridium in the residue left when crude platinum was dissolved in aqua regia, a mixture of nitric and hydrochloric acid. Iridium was discovered in 1803 by British chemist Smithson Tennant. As a metal, iridium is solid at room temperature and exhibits high-density characteristics. It is widely known for its applications in high-performance materials, catalytic converters, and electronic devices. Iridium is a hard, brittle, and lustrous platinum group metal that is extremely rare and highly corrosion-resistant. From its role as a catalyst to its application in high-performance materials and medical treatments, learn why iridium is an element of both practical importance and scientific intrigue. Discover its unique physical and chemical properties, historical background, and diverse uses in industries and medicine. Explore the fascinating world of iridium, a rare and valuable element in the platinum group.
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