Aluminum vs Gallium

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PropertyAl AluminumGa Gallium
Atomic number1331
SymbolAlGa
NameAluminumGallium
Categorypost-transition-metalpost-transition-metal
Standard Atomic Weight26.981538 u69.723 u
Period34
Group1313
Blockpp
Phase at STPsolidsolid
Electron configuration[Ne]3s23p1[Ar]4s23d104p1
Oxidation states[-2, -1, 0, 1, 2, 3][-5, -4, -3, -2, -1, 0, 1, 2, 3]
Electronegativity (Pauling)1.611.81
Electron affinity0.4328 eV0.3 eV
Density2700 kg/m³5910 kg/m³
Melting point660.287 °C29.76 °C
Boiling point2518.85 °C2203.85 °C
Discovery year18251875