Bromine vs Thallium

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PropertyBr BromineTl Thallium
Atomic number3581
SymbolBrTl
NameBromineThallium
Categoryhalogenpost-transition-metal
Standard Atomic Weight79.904 u204.3835 u
Period46
Group1713
Blockpp
Phase at STPliquidsolid
Electron configuration[Ar]4s23d104p5[Xe]6s24f145d106p1
Oxidation states[-1, 1, 2, 3, 4, 5, 7][-5, -2, -1, 1, 2, 3]
Electronegativity (Pauling)2.961.62
Electron affinity3.3635 eV0.377 eV
Density3102.8 kg/m³1.180000e+4 kg/m³
Melting point-7.2 °C303.85 °C
Boiling point58.8 °C1472.85 °C
Discovery year18251861