Ruthenium

Source: http://www.tabulka.cz/english/elements/show.asp?id=44

name Ruthenium
latin Ruthenium
french Ruthénium
german Ruthenium
symbol Ru
proton number 44
atomic weight 101.07
Pauling electronegativity 2.2
electronic configuration [Kr] 4d75s1
1s22s22p63s23p63d104s24p64d75s1
melting point 2607 K, 2334°C, 4233°F
boiling point 4423 K, 4150°C, 7502°F
group 8
period 5
state (by 20°C) solid
oxidation states +3, +4, +6, +8

Discoverer

Year of discovery Discoverers
1828 Gottfried W. Osann
1844 Karl Klaus


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