[DOC] [TLE] Iridium - Wikipedia [PAR] Iridium is a chemical element with symbol Ir and atomic number 77. A very hard, 
brittle, ... It is also the most corrosion-resistant metal, even at temperatures as 
high as ... Iridium is one of the rarest elements in Earth's crust, with annual 
production .... 4; it is only known as gas-phase species and is not known to form 
any salts. [DOC] [TLE] Noble metal - Wikipedia [PAR] In chemistry, the noble metals are metals that are resistant to corrosion and 
oxidation in moist ... Cs, Ba, *, Hf, Ta, W, Re, Os, Ir, Pt, Au, Hg, Tl, Pb, Bi, Po, At, 
Rn. Fr, Ra, ** ... More inclusive lists include one or more of mercury, rhenium or 
copper as noble metals. On the ... In physics, the definition of a noble metal is 
most strict. [DOC] [TLE] Iridium, Chemical Element - reaction, water, uses, elements ... [PAR] The periodic table is a chart that shows how elements are related to one another. 
... In fact, iridium is the most corrosion-resistant metal known. ... in the soil to track 
the impact of a giant meteor with the Earth 65 million years ago. SYMBOL Ir. [DOC] [TLE] Iridiumthe essentials [WebElements Periodic Table] [PAR] It is the most corrosion resistant metal known, and was used in making the 
standard ... Density of the chemical elements on a miniature periodic table spark 
table ... of neutral Iridium is [Xe].4f14.5d7.6s2 and the term symbol of Iridium is 4F
9/2. ... This Ir-192 is used as a radiation source in gamma cameras that are used 
for... [DOC] [TLE] Facts About Iridium - Live Science [PAR] Aug 23, 2013 ... Properties, sources and uses of the element iridium. ... Atomic Symbol: Ir ... 
Iridium is the most corrosive resistant metal known and one of the... [DOC] [TLE] Iridium - Element information, properties and uses | Periodic Table [PAR] Element Iridium (Ir), Group 9, Atomic Number 77, d-block, Mass 192.217. Sources
, facts, uses, scarcity (SRI), podcasts, alchemical symbols, videos and images. ... 
Solid, Key isotopes, 193Ir. Electron configuration, [Xe] 4f145d76s2, CAS number, 
7439-88-5 ... Iridium is the most corrosion-resistant material known. It is used in... [DOC] [TLE] atomic number 77s - Memidex dictionary/thesaurus [PAR] chemical element, one of the platinum metals of Groups 8-10, Periods 5 and 6, of 
the periodic table. ... A metallic chemical element (symbol Ir) with an atomic 
number of 77. ... transition element that is the most corrosion-resistant metal 
known. [DOC] [TLE] Iridium - Periodic Table of Elements: Los Alamos National Laboratory [PAR] 6/9/16; LANL researchers shine more light on the mechanism of one of the most 
... Back to Elements List ... Atomic Symbol: Ir, Melting Point: 2446 C ... It is the 
most corrosion-resistant metal known, and was used in making the standard 
meter... [DOC] [TLE] iridium (Ir) | chemical element | Britannica.com [PAR] Ir chemical element, one of the platinum metals of Groups 810 (VIIIb), Periods 5 
and 6, of the ... This brittle element is the most corrosion-resistant metal known. [DOC] [TLE] Metals | Britannica.com [PAR] The element gold (chemical symbol: Au) is a precious metal belonging to Group 
... to be the oldest of metals, lead is highly durable and resistant to corrosion, as 
is ... Fe chemical element, metal of Group 8 (VIIIb) of the periodic table, the most 
... Mn chemical element, one of the silvery white, hard, brittle metals of Group 7... [DOC] [TLE] Iridium - CreationWiki, the encyclopedia of creation science [PAR] Iridium is a chemical element classified as a Transition metals, and known by the 
chemical symbol Ir. It is perhaps best known for its extraordinary density ... 1 
Properties; 2 Occurrences; 3 Uses; 4 History; 5 Video

Question: This element, symbol Ir, is one of the most corrosion-resistant metals known
Answer: Iridium