Noun
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.
Source: Webster's dictionaryAdvance Catalysis, Volume 186, 3-12 Solar energy conversion Some ruthenium complexes absorb light throughout the visible spectrum and are being actively researched for solar energy technologies. Source: Internet
Characteristics Palladium belongs to group 10 in the periodic table, but the configuration in the outermost electron shells is atypical for group 10 (see also niobium (41), ruthenium (44), and rhodium (45)). Source: Internet
For example, the PGMs mined in South Africa contain on average 11% ruthenium while the PGMs mined in the former USSR contain only 2% (1992). citation citation Ruthenium, osmium, and iridium are considered the minor platinum group metals. Source: Internet
G.M. Brown & J.H. Butler (1997) New method for the characterization of domain morphology of polymer blends using ruthenium tetroxide staining and low voltage scanning electron microscopy (LVSEM). Source: Internet
Berzelius did not find any unusual metals, but Osann thought he found three new metals, which he called pluranium, ruthenium, and polinium. Source: Internet
I had every right to call it by this name because Mr. Osann relinquished his ruthenium and the word does not yet exist in chemistry." Source: Internet