Aluminum vs Indium

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PropertyAl AluminumIn Indium
Atomic number1349
SymbolAlIn
NameAluminumIndium
Categorypost-transition-metalpost-transition-metal
Standard Atomic Weight26.981538 u114.818 u
Period35
Group1313
Blockpp
Phase at STPsolidsolid
Electron configuration[Ne]3s23p1[Kr]5s24d105p1
Oxidation states[-2, -1, 0, 1, 2, 3][-5, -2, -1, 0, 1, 2, 3]
Electronegativity (Pauling)1.611.78
Electron affinity0.4328 eV0.3 eV
Density2700 kg/m³7310 kg/m³
Melting point660.287 °C156.6 °C
Boiling point2518.85 °C2071.85 °C
Discovery year18251863