Ruthenium

Ru Ruthenium Transition Metal

 

Atomic number:  44 Atomic weight:  101.07
Shells:  2,8,18,15,1 Orbitals:  [Kr] 4d7 5s1
Melting point:  2334°C Boiling point:  4150°C
Covalent radius:  1.25 Å Atomic volume:  8.3 cm³/mol
Atomic radius:  1.89 Å Ionic radius:  .62 (+4) Å
Electronegativity:  2.2 Oxidation states:  2,(3,4),6,8
1st ionization pot.:  7.3605 V 2nd ionization pot.:  16.76 V
3rd ionization pot.:  28.47 V Specific heat:  0.238 J/gK
Heat of fusion:  24.0 kJ/mol Heat of vapor.:  595.0 kJ/mol
Thermal conduct.:  1.17 W/cmK Electrical conduct.:  0.137 10^6/cm ohm
Density:  12.2 g/cm³ Valence:  0,1,2,3,4,5,6,7,8