Ruthenium
Elemental State Ru
Electron Configuration 1s22s22p63s23p63d104s24p65s14d7
First Ionization Potential 7.361 eV
Electron Affinity 1.05 eV (calculated value)
Z*  
Pauling Electronegativity 2.2
Covalent Radius 1.26 Å
Metallic Radius 1.34 Å
Ionic Radius 0.82 Å Ru3+ coordination number = 6

0.760 Å Ru4+ coordination number = 6

0.705 Å Ru5+ coordination number = 6

van der Waal's Radius  
Melting Point 2334 oC
Boiling Point 4140 oC
Density 12.41 g/cm3
Other Properties