![]() ![]() Chabaneau did not realize that the "platinum" he was studying included various amounts of other noble metals. At other times, it was brittle and shattered when hammered. Sometimes the platinum he worked with could be hammered into flat plates easily. In the late 1780s, the Spanish government gave its entire supply of platinum to Chabaneau to study. The work of French chemist Pierre-Fran çois Chabaneau is an example. Of platinum, the sample often contained iridium, rhodium, osmium, and other metals as well. When a scientist thought that he was analyzing a sample These metals often occurred mixed together in the earth. The platinum metals posed a difficult problem for early chemists. PRONUNCIATION i-RI-dee-um Discovery and naming Scientists search for iridium in the soil to track the impact of a giant meteor with the Earth 65 million years ago.įAMILY Group 9 (VIIIB) Transition metal Platinum group Iridium may be a key element in the puzzle of dinosaur extinction. That property makes it useful in making objects that are exposed to such materials. It is not affected by high temperatures, acids, bases, or most other strong chemicals. In fact, iridium is the most corrosion-resistant metal known. They appear to be "too superior" to react with most other substances. They have this name because they do not react well with other elements and compounds. The metals in the platinum family are also known as the noble metals. Indium is a transition metal that is also part of the platinum family. The periodic table is a chart that shows how elements are related to one another. Indium is in Group 9 (VIIIB) of the periodic table. Note: This article, originally published in 1998, was updated in 2006 for the eBook edition. ![]()
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