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ruthenium

n. 釕

釕

WordNet (r) 3.0 (2006) (WordNet)

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

The Collaborative International Dictionary of English v.0.48 (gcide)

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]

The Elements Database (element)

ruthenium
Symbol: Ru
Atomic number: 44
Atomic weight: 101.07
Hard white metallic transition element. Found with platinum, used as a
catalyst in some platinum alloys. Dissolves in fused alkalis, and is not
attacked by acids. Reacts with halogens and oxygen at high temperatures.
Isolated in 1844 by K.K. Klaus.

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英文字典中文字典相關資料:

Ruthenium - Wikipedia
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 other metals of the platinum group, ruthenium is unreactive to most chemicals
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 . . .
Ruthenium is one of the rarest metals on Earth It is found uncombined in nature; however, it is more commonly found associated with other platinum metals in the minerals pentlandite and pyroxinite
Ruthenium | History, Uses, Facts, Physical Chemical . . .
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
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]
Scalable ruthenium core–shell hydrogen catalyst for efficient . . .
Here we develop a non-platinum catalyst composite featuring a ruthenium oxide (RuO 2) core encapsulated by a thin ruthenium phosphide (RuP 2) shell, rapidly synthesized by a flame-assisted process
Ruthenium Facts - Ru or Atomic Number 44 - Science Notes and . . .
Ruthenium (Ru or atomic number 44) is a transition metal that belongs to the platinum group on the periodic table It has remarkable hardness, resistance to corrosion, and versatility in various industrial applications

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