| slovo | definícia |
ruthenium
(encz) | ruthenium,ruthenium n: Zdeněk Brož |
ruthenium
(czen) | ruthenium,rutheniumn: Zdeněk Brož |
Ruthenium
(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] |
ruthenium
(wn) | ruthenium
n 1: a rare polyvalent metallic element of the platinum group;
it is found associated with platinum [syn: ruthenium,
Ru, atomic number 44] |
ruthenium
(elements) | 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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| | podobné slovo | definícia |
Ruthenium
(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] |
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