Why Iridium is called Rainbow metal?

Iridium is a chemical element with symbol Ir and atomic number 77. Iridium was discovered in 1803 among insoluble impurities in natural platinum. Smithson Tennant, the primary discoverer, named iridium for the Greek goddess Iris, personification of the rainbow, because of the striking and diverse colors of its salts.

Similarly, it is asked, what type of element is Iridium?

It is primarily used as a hardening agent for platinum. Platinum-iridium alloys are used to make crucibles and other high temperature equipment. Iridium is also alloyed with osmium to make the tips of fountain pens and compass bearings. Iridium is the most corrosive resistant metal known.

What group is iridium in?

Iridium is a chemical element with symbol Ir and atomic number 77. A very hard, brittle, silvery-white transition metal of the platinum group, iridium is the second-densest element (after osmium).

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