Aluminum vs Barium

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PropertyAl AluminumBa Barium
Atomic number1356
SymbolAlBa
NameAluminumBarium
Categorypost-transition-metalalkaline-earth-metal
Standard Atomic Weight26.981538 u137.327 u
Period36
Group132
Blockps
Phase at STPsolidsolid
Electron configuration[Ne]3s23p1[Xe]6s2
Oxidation states[-2, -1, 0, 1, 2, 3][1, 2]
Electronegativity (Pauling)1.610.89
Electron affinity0.4328 eV0.1447 eV
Density2700 kg/m³3620 kg/m³
Melting point660.287 °C726.85 °C
Boiling point2518.85 °C1896.85 °C
Discovery year18251808