ru·the·ni·um /ruˈθiniəm/
釕
ru·the·ni·um /ruˈθɪnɪəm/ 名詞
釕
Ru·the·ni·um n. 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.
◄ ►
ruthenium
n : a rare polyvalent metallic element of the platinum group; it
is found associated with platinum [syn: Ru, atomic
number 44]
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.