Molybdenum vs Thallium

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PropertyMo MolybdenumTl Thallium
Atomic number4281
SymbolMoTl
NameMolybdenumThallium
Categorytransition-metalpost-transition-metal
Standard Atomic Weight95.95 u204.3835 u
Period56
Group613
Blocksp
Phase at STPsolidsolid
Electron configuration[Kr]5s14d5[Xe]6s24f145d106p1
Oxidation states[-4, -2, -1, 0, 1, 2, 3, 4, 5, 6][-5, -2, -1, 1, 2, 3]
Electronegativity (Pauling)2.161.62
Electron affinity0.744 eV0.377 eV
Density1.020000e+4 kg/m³1.180000e+4 kg/m³
Melting point2622.85 °C303.85 °C
Boiling point4638.85 °C1472.85 °C
Discovery year17781861