Dysprosium vs Thallium

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PropertyDy DysprosiumTl Thallium
Atomic number6681
SymbolDyTl
NameDysprosiumThallium
Categorylanthanidepost-transition-metal
Standard Atomic Weight162.5 u204.3835 u
Period66
GroupN/A13
Blocksp
Phase at STPsolidsolid
Electron configuration[Xe]6s24f10[Xe]6s24f145d106p1
Oxidation states[0, 1, 2, 3, 4][-5, -2, -1, 1, 2, 3]
Electronegativity (Pauling)1.221.62
Electron affinity0.352 eV0.377 eV
Density8550 kg/m³1.180000e+4 kg/m³
Melting point1411.85 °C303.85 °C
Boiling point2566.85 °C1472.85 °C
Discovery year18781861