Aluminum vs Cobalt

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PropertyAl AluminumCo Cobalt
Atomic number1327
SymbolAlCo
NameAluminumCobalt
Categorypost-transition-metaltransition-metal
Standard Atomic Weight26.981538 u58.933194 u
Period34
Group139
Blockps
Phase at STPsolidsolid
Electron configuration[Ne]3s23p1[Ar]4s23d7
Oxidation states[-2, -1, 0, 1, 2, 3][-3, -1, 0, 1, 2, 3, 4, 5]
Electronegativity (Pauling)1.611.88
Electron affinity0.4328 eV0.661 eV
Density2700 kg/m³8860 kg/m³
Melting point660.287 °C1494.85 °C
Boiling point2518.85 °C2926.85 °C
Discovery year18251735