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44Ru

Ruthenium

루테늄 · ルテニウム

Transition metal

Atomic number44
ElementRuRuthenium
Atomic mass101.07
CategoryTransition metal
Group8
Period5
Electron config[Kr] 4d7 5s1
Shells2,8,18,15,1
State (RT)Solid
Melting pt2334°C
Boiling pt4150°C
Electronegativity2.2
Discovered1844
Main usesElectrical contacts, catalysts
Ru44
2 · 8 · 18 · 15 · 1
Bohr model

Group 8