ruthenium

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ruthenium

 [roo-the´ne-um]
a chemical element, atomic number 44, atomic weight 101.07, symbol Ru. (See Appendix 6.)

ru·the·ni·um (Ru),

(rū-thē'nē-ŭm),
A metallic element of the platinum group; atomic no. 44, atomic wt. 101.07; 106Ru, with a half-life of 1.020 years, has been used in the treatment of certain eye problems.
[Mediev. L. Ruthenia, Russia, where first obtained]

ruthenium

/ru·the·ni·um/ (roo-the´ne-um) a chemical element, at. no. 44, symbol Ru.

ruthenium (Ru)

[ro̅o̅thē′nē·əm]
Etymology: Ruthenia, region of western Ukraine
a hard, brittle, metallic element. Its atomic number is 44, and its atomic mass is 101.07.

ru·the·ni·um

(rū-thē'nē-ŭm)
A metallic element of the platinum group; atomic no. 44, atomic wt. 101.07; 106Ru, with a half-life of 1.020 years, has been used in the treatment of certain eye problems.
[Mediev. L. Ruthenia, Russia, where first obtained]

ruthenium

a chemical element, atomic number 44, atomic weight 101.07, symbol Ru. See Table 6.