Magnesium vs Thallium

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PropertyMg MagnesiumTl Thallium
Atomic number1281
SymbolMgTl
NameMagnesiumThallium
Categoryalkaline-earth-metalpost-transition-metal
Standard Atomic Weight24.3055 u204.3835 u
Period36
Group213
Blocksp
Phase at STPsolidsolid
Electron configuration[Ne]3s2[Xe]6s24f145d106p1
Oxidation states[0, 1, 2][-5, -2, -1, 1, 2, 3]
Electronegativity (Pauling)1.311.62
Electron affinity-0.4 eV0.377 eV
Density1740 kg/m³1.180000e+4 kg/m³
Melting point649.85 °C303.85 °C
Boiling point1089.85 °C1472.85 °C
Discovery year17551861