The chemical element that takes its name from the Latin word for rainbow is iridium. The name iridium is derived from the Latin word iris, which means rainbow. This name was chosen because of the element’s colorful salts, which display a variety of hues when dissolved in solution. Iridium is a dense and corrosion-resistant metal, often used in applications requiring durability and resistance to high temperatures, such as in spark plugs and electrical contacts.
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