Aluminum vs Chromium

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PropertyAl AluminumCr Chromium
Atomic number1324
SymbolAlCr
NameAluminumChromium
Categorypost-transition-metaltransition-metal
Standard Atomic Weight26.981538 u51.9961 u
Period34
Group136
Blockps
Phase at STPsolidsolid
Electron configuration[Ne]3s23p1[Ar]3d54s1
Oxidation states[-2, -1, 0, 1, 2, 3][-4, -2, -1, 0, 1, 2, 3, 4, 5, 6]
Electronegativity (Pauling)1.611.66
Electron affinity0.4328 eV0.675 eV
Density2700 kg/m³7150 kg/m³
Melting point660.287 °C1906.85 °C
Boiling point2518.85 °C2670.85 °C
Discovery year18251797