The name iridium, derived from the Greek word iris (rainbow), refers to the various colors of its compounds. Iridium is one of the rarest elements in Earth's crust, with an estimated annual …

Nov 7, 2025 · Iridium, chemical element, one of the platinum metals of Groups 8–10 (VIIIb), Periods 5 and 6, of the periodic table. It is very dense and rare and is used in platinum alloys.

Iridium is a hard, silvery metal. It is almost as unreactive as gold. It has a very high density and melting point. Iridium is the most corrosion-resistant material known. It is used in special alloys and forms an …

Dec 27, 2023 · The name Iridium is said to come from the Greek word Iris meaning rainbow which represents the strongly colored compounds rather than the metal itself according to the Royal …

Iridium (pronounced as i-RID-ee-em) is a hard and brittle metal represented by the chemical symbol Ir. It is the least reactive element, belonging to the platinum family.

Iridium may be a key element in the puzzle of dinosaur extinction. Scientists search for iridium in the soil to track the impact of a giant meteor with the Earth 65 million years ago.

Jun 1, 2023 · Iridium is a chemical element and one of the transition metals on the periodic table.

Explore the fascinating world of iridium, a rare and valuable element in the platinum group. Discover its unique physical and chemical properties, historical background, and diverse uses in industries and …

May 21, 2024 · Iridium is a metallic element with the atomic number 77 and the symbol Ir. On the periodic table of elements, it is found in Group 9, between platinum and osmium.

Dec 2, 2025 · Iridium is considered one of the Earth's rarest and most valuable metals, serving key applications in aerospace components, spark plugs, electrical contacts, and several other high …