Iridium - Wikipedia
Iridium is a chemical element; it has symbol Ir and atomic number 77. A very hard, brittle, silvery-white transition metal of the platinum group, it is considered the second-densest naturally occurring metal (after osmium) with a density of 22.56 g/cm 3 (0.815 lb/cu in) [9] as defined by experimental X-ray crystallography. [a] 191 Ir and 193 Ir ...
Iridium - Element information, properties and uses | Periodic Table
Element Iridium (Ir), Group 9, Atomic Number 77, d-block, Mass 192.217. Sources, facts, uses, scarcity (SRI), podcasts, alchemical symbols, videos and images.
Iridium | Definition, Properties, & Uses | Britannica
Sep 28, 2024 · 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. A precious, silver-white metal, iridium is hard and brittle, but it …
Iridium (Ir) - Periodic Table
Iridium is the 77th element in the periodic table and has a symbol of Ir and atomic number of 77. It has an atomic weight of 192.217 and a mass number of 193. Iridium has seventy-seven protons and one hundred sixteen neutrons in its nucleus, and seventy-seven electrons in six shells.
Iridium Facts – Ir or Atomic Number 77 - Science Notes and …
Sep 7, 2024 · Iridium is a dense, hard, and corrosion-resistant metal belonging to the platinum group metals (PGMs). It has the element symbol Ir and atomic number 77. Iridium is one of the rarest elements on Earth. Its remarkable resistance to heat and chemical attack makes it valuable in various high-temperature and corrosive applications.
Iridium - 77 Ir: the essentials - WebElements
Atomic number: 77 ; Relative atomic mass (A r): 192.217 (3) Standard state: solid at 298 K; Appearance: silvery white; Classification: Metallic
Iridium - Periodic Table
Iridium - Properties, history, name origin, facts, applications, isotopes, electronic configuation, crystal structure, hazards and more; Interactive periodic table of the chemical elements.
Iridium Facts - Periodic Table of the Elements - ThoughtCo
Jan 10, 2020 · Iridium Basic Facts. Atomic Number: 77. Symbol: Ir. Atomic Weight: 192.22. Discovery: S.Tenant, A.F.Fourcory, L.N.Vauquelin, H.V.Collet-Descoltils 1803/1804 (England/France) Electron Configuration: [Xe] 6s 2 4f 14 5d 7. Word Origin: Latin iris rainbow, because the salts of iridium are highly colored. Element Classification: Transition Metal.
Iridium (Ir) [77] — Chemical Element — Periodic Table
Get the facts about element Iridium (Ir) [77] from the periodic table. Find physical data, electron configuration, chemical properties, aggregation states, isotope data (including decay trees) as well as some historic information.
Iridium | Ir (Element) - PubChem
Iridium is a chemical element with symbol Ir and atomic number 77. Classified as a transition metal, Iridium is a solid at room temperature.