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Iridium is a stable metal that chemically unreactive, like platinum and gold. Iridium is the most resistant to oxidation of all metals. It can be used is as a hardening agent in alloys with Platinum and Osmium. Sometimes used in medical therapies e.g. treating prostate cancer by radiation therapy.
DESCRIPTION Rubidium is a silvery-white metal, soft, ductile, and, with a melting point of only 39.3 o C, liquid at elevated ambient temperatures. It is one of the alkali metals, atomic number 37, atomic weight 85.47, and electron configuration [Kr]5s 1 and is located in period 5, group 1 (or IA) of the periodic table.ESCRIPTION Rubidium is a silvery-white metal, soft, ductile, and, with a melting point of only 39.3 o C, liquid at elevated ambient temperatures. It is one of the alkali metals, atomic number 37, atomic weight 85.47, and electron configuration [Kr]5s 1 and is located in period 5, group 1 (or IA) of the periodic table.