Ruthenium (Ru)
Atomic number
44
Mass number
101
Electronegativity
2.2
Covalent radius
1.25
Atomic radius
1.89
Melting point
2523.0
Boiling point
4423.0
Density
12.2
Specific heat
0.238
Electrical conductivity
0.137e6
Thermal conductivity
1.17