ruthenium

/roo-thee-nee-uhm, -theen-yuhm/US // ruˈθi ni əm, -ˈθin yəm //UK // (ruːˈθiːnɪəm) //

钌,钌合金,钌的,钌的作用

Definitions

n.名词 noun

1
Chemistry.
- : a steel-gray, rare metallic element, belonging to the platinum group of metals. Symbol: Ru; atomic weight: 101.07; atomic number: 44; specific gravity: 12.2 at 20°C.

The lower ovoids in ruthenium are identical in composition, with those of iron, cobalt and nickel and may be studied under Iron.
The metals of the first of these groups—ruthenium, rhodium, and palladium—have atomic weights near 100 and densities near 12.
In Fremys process for separating osmium from the residues of platinum ore, ruthenium occurs in a dioxide.