Gallium vs Ruthenium

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PropertyGa GalliumRu Ruthenium
Atomic number3144
SymbolGaRu
NameGalliumRuthenium
Categorypost-transition-metaltransition-metal
Standard Atomic Weight69.723 u101.07 u
Period45
Group138
Blockps
Phase at STPsolidsolid
Electron configuration[Ar]4s23d104p1[Kr]5s14d7
Oxidation states[-5, -4, -3, -2, -1, 0, 1, 2, 3][-4, -2, 1, 2, 3, 4, 5, 6, 7, 8]
Electronegativity (Pauling)1.812.2
Electron affinity0.3 eV1.05 eV
Density5910 kg/m³1.210000e+4 kg/m³
Melting point29.76 °C2333.85 °C
Boiling point2203.85 °C4149.85 °C
Discovery year18751828