Magnesium vs Cobalt

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PropertyMg MagnesiumCo Cobalt
Atomic number1227
SymbolMgCo
NameMagnesiumCobalt
Categoryalkaline-earth-metaltransition-metal
Standard Atomic Weight24.3055 u58.933194 u
Period34
Group29
Blockss
Phase at STPsolidsolid
Electron configuration[Ne]3s2[Ar]4s23d7
Oxidation states[0, 1, 2][-3, -1, 0, 1, 2, 3, 4, 5]
Electronegativity (Pauling)1.311.88
Electron affinity-0.4 eV0.661 eV
Density1740 kg/m³8860 kg/m³
Melting point649.85 °C1494.85 °C
Boiling point1089.85 °C2926.85 °C
Discovery year17551735