Scandium vs Ruthenium

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PropertySc ScandiumRu Ruthenium
Atomic number2144
SymbolScRu
NameScandiumRuthenium
Categorytransition-metaltransition-metal
Standard Atomic Weight44.955908 u101.07 u
Period45
Group38
Blockss
Phase at STPsolidsolid
Electron configuration[Ar]4s23d1[Kr]5s14d7
Oxidation states[0, 1, 2, 3][-4, -2, 1, 2, 3, 4, 5, 6, 7, 8]
Electronegativity (Pauling)1.362.2
Electron affinity0.188 eV1.05 eV
Density2990 kg/m³1.210000e+4 kg/m³
Melting point1540.85 °C2333.85 °C
Boiling point2835.85 °C4149.85 °C
Discovery year18791828