Magnesium vs Tantalum

← Back to Periodic Table
PropertyMg MagnesiumTa Tantalum
Atomic number1273
SymbolMgTa
NameMagnesiumTantalum
Categoryalkaline-earth-metaltransition-metal
Standard Atomic Weight24.3055 u180.94788 u
Period36
Group25
Blockss
Phase at STPsolidsolid
Electron configuration[Ne]3s2[Xe]6s24f145d3
Oxidation states[0, 1, 2][-3, -1, 0, 1, 2, 3, 4, 5]
Electronegativity (Pauling)1.311.5
Electron affinity-0.4 eV0.322 eV
Density1740 kg/m³1.640000e+4 kg/m³
Melting point649.85 °C3016.85 °C
Boiling point1089.85 °C5457.85 °C
Discovery year17551802