atomic number 44 - Hutchinson encyclopedia article about atomic number 44 Printer Friendly
Dictionary, Encyclopedia and Thesaurus - The Free Dictionary
1,734,435,991 visitors served.
forum mailing list For webmasters
?
New: Language forums
Dictionary/
thesaurus
Medical
dictionary
Legal
dictionary
Financial
dictionary
Acronyms
 
Idioms
Encyclopedia
Wikipedia
encyclopedia
?

ruthenium
(redirected from atomic number 44)

    Also found in: Dictionary/thesaurus, Encyclopedia, Wikipedia 0.01 sec.

ruthenium

Hard, brittle, silver-white, metallic element, atomic number 44, relative atomic mass 101.07. It is one of the so-called platinum group of metals; it occurs in platinum ores as a free metal and in the natural alloy osmiridium. It is used as a hardener in alloys and as a catalyst; its compounds are used as colouring agents in glass and ceramics.

It was discovered by J A Sniadecki in Vilno, Poland, in 1808, and then rediscovered in 1827 by G W Osann and named after its place of discovery, the Ural Mountains in Ruthenia (now part of Ukraine). Pure ruthenium was isolated in 1845 by K K Klaus.



How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content.
?Page tools
Printer friendly
Cite / link
 Email
Feedback
?Sign in SSL protected
Email:
Password:
Register

? Mentioned in
 
Hutchinson browser? ? Full browser
 
 
Hutchinson Encyclopedia
?

Disclaimer | Privacy policy | Feedback | Copyright © 2009 Farlex, Inc.
All content on this website, including dictionary, thesaurus, literature, geography, and other reference data is for informational purposes only. This information should not be considered complete, up to date, and is not intended to be used in place of a visit, consultation, or advice of a legal, medical, or any other professional. Terms of Use.