Tungsten vs Thallium

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PropertyW TungstenTl Thallium
Atomic number7481
SymbolWTl
NameTungstenThallium
Categorytransition-metalpost-transition-metal
Standard Atomic Weight183.84 u204.3835 u
Period66
Group613
Blocksp
Phase at STPsolidsolid
Electron configuration[Xe]6s24f145d4[Xe]6s24f145d106p1
Oxidation states[-4, -2, -1, 0, 1, 2, 3, 4, 5, 6][-5, -2, -1, 1, 2, 3]
Electronegativity (Pauling)2.361.62
Electron affinity0.815 eV0.377 eV
Density1.930000e+4 kg/m³1.180000e+4 kg/m³
Melting point3421.85 °C303.85 °C
Boiling point5554.85 °C1472.85 °C
Discovery year17811861