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#ruthenium #chemical element #ruthenia #karl claus

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#ruthenium #platinum group metal #PGM #precious metal #noble metal #hardness #corrosion resistance #silvery white

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#ruthenium #ru #element 44 #atomic number 44 #ruthenia

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#ruthenium #catalyst #catalysis #chemical reaction #alloy #industrial catalyst #hydrogenation

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#ruthenium #alloy #resistors #electrical contacts #coating #precious metal #rare metal

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#ruthenium #atomic number 44 #hard metal #brittle metal #element 44 #industrial use