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ruthenium    
n. 钌

钌

ruthenium
n 1: a rare polyvalent metallic element of the platinum group;
it is found associated with platinum [synonym: {ruthenium},
{Ru}, {atomic number 44}]

Ruthenium \Ru*the"ni*um\, n. [NL. So named from the Ruthenians,
a Little Russian people, as coming from Russia, the metal
having been found in the Ural mountains.] (Chem.)
A rare element of the light platinum group, found associated
with platinum ores, and isolated as a hard, brittle
steel-gray metal which is very infusible. Symbol Ru. Atomic
weight 103.5. Specific gravity 12.26. See {Platinum metals},
under {Platinum}.
[1913 Webster]


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  • Ruthenium - Wikipedia
    A minor application for ruthenium is in platinum alloys and as a chemical catalyst A new application of ruthenium is as the capping layer for extreme ultraviolet photomasks in semiconductor lithography Ruthenium is generally found in ores with the other platinum group metals in the Ural Mountains and in North and South America
  • 钌（化学元素）_百度百科
    钌（Ruthenium），元素周期表第五周期第8族过渡金属，属铂系元素。 元素符号Ru，原子序数44，相对原子质量101 07。 是有光泽的银白色金属，比较脆。 六方晶系。 相对密度为12 45g cm3（20℃），熔点2334℃，沸点4150℃。 电阻率7 6x10-8Ω·m（20℃）。 具有化学惰性。
  • Ruthenium | Chemical Element, Catalysts, Alloys | Britannica
    Ruthenium, chemical element, one of the platinum metals of Group 810 (VIIIb), Periods 5 and 6, of the periodic table, used as an alloying agent to harden platinum and palladium
  • Ruthenium - Element information, properties and uses | Periodic Table
    Ruthenium is one of the most effective hardeners for platinum and palladium, and is alloyed with these metals to make electrical contacts for severe wear resistance It is used in some jewellery as an alloy with platinum Ruthenium has no known biological role Ruthenium (IV) oxide is highly toxic Ruthenium is one of the rarest metals on Earth
  • Ruthenium | Ru (Element) - PubChem
    Chemical element, Ruthenium, information from authoritative sources Look up properties, history, uses, and more
  • Ruthenium Element Facts - chemicool. com
    Ruthenium is a very rare, hard, lustrous, brittle, silvery-white metal that does not tarnish at room temperature Typical of transition metals, ruthenium can exist in many oxidation states, its most common being the oxidation states II, III and IV
  • Ruthenium Facts, Symbol, Discovery, Properties, Uses
    A transition metal, ruthenium (pronounced as roo-THE-nee-em) is denoted by the chemical symbol Ru [1] Its abundance in the earth’s crust is estimated to be 1×10 -7 % [19]
  • WebElements Periodic Table » Ruthenium » the essentials
    This WebElements periodic table page contains the essentials for the element ruthenium
  • 钌 - 维基百科，自由的百科全书
    钌 釕 liǎo （英語： Ruthenium），是一種 化學元素，其 化學符號 为 Ru， 原子序數 为44， 原子量 為 101 07 u，是在 元素週期表 中 鉑族 的稀有 過渡金屬。 釕與鉑族的其他金屬一樣，對大多數其他化學物質都是惰性的。
  • Ruthenium | History, Uses, Facts, Physical Chemical Characteristics
    Ruthenium was discovered in 1884 and is member of the platinum family It is a rare metal and widely in electrical industry and in making alloys





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