Antimony vs Thallium

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PropertySb AntimonyTl Thallium
Atomic number5181
SymbolSbTl
NameAntimonyThallium
Categorymetalloidpost-transition-metal
Standard Atomic Weight121.76 u204.3835 u
Period56
Group1513
Blockpp
Phase at STPsolidsolid
Electron configuration[Kr]5s24d105p3[Xe]6s24f145d106p1
Oxidation states[-3, -2, -1, 0, 1, 2, 3, 4, 5][-5, -2, -1, 1, 2, 3]
Electronegativity (Pauling)2.051.62
Electron affinity1.07 eV0.377 eV
Density6685 kg/m³1.180000e+4 kg/m³
Melting point630.63 °C303.85 °C
Boiling point1586.85 °C1472.85 °C
Discovery year17071861