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Ruthenium is a chemical element; it has symbol Ru and atomic number 44. It is a rare transition metal belonging to the platinum group of the periodic table. Like the ...
The most important reagents for the introduction of ruthenium are ruthenium(III) chloride and triruthenium dodecacarbonyl. In its organometallic compounds, ruthenium is known to adopt oxidation states from -2 ([Ru(CO) 4] 2−) to +6 ([RuN(Me)4] −). Most common are those in the 2+ oxidation state, as illustrated below.
Naturally occurring platinum and platinum-rich alloys were known by pre-Columbian Americans for many years. [5] However, even though the metal was used by pre-Columbian peoples, the first European reference to platinum appears in 1557 in the writings of the Italian humanist Julius Caesar Scaliger (1484–1558) as a description of a mysterious metal found in Central American mines between ...
Laurite is an opaque black, metallic ruthenium sulfide mineral with formula: RuS 2. It crystallizes in the isometric system. It is in the pyrite structural group. Though it's been found in many localities worldwide, it is extremely rare. Laurite has a Mohs hardness of 7.5 and a specific gravity of 6.43.
In 4th- and 5th-generation superalloys, ruthenium is used to avoid this effect. Among others the new superalloys are EPM-102 (with 3% Ru) and TMS-162 (with 6% Ru), [59] as well as TMS-138 [60] and TMS-174. [61] [62] CFM International CFM56 jet engine with blades made with 3% rhenium
Here are some more fun facts about pet turtles. With their protective shell, this now endangered species has survived mass extinctions and lives throughout the world – including as pets in our ...
The Tennessee man charged with kidnapping and killing a kindergarten teacher during a morning run two years ago pleaded guilty to first-degree murder, officials said Monday.
While lists of noble metals can differ, they tend to cluster around gold and the six platinum group metals: ruthenium, rhodium, palladium, osmium, iridium, and platinum. In addition to this term's function as a compound noun, there are circumstances where noble is used as an adjective for the noun metal.