Gadolinium vs Mercury

PropertyGd GadoliniumHg Mercury
Atomic number6480
SymbolGdHg
NameGadoliniumMercury
Categorylanthanidetransition-metal
Standard Atomic Weight157.25 u200.592 u
Period66
GroupN/A12
Blockss
Phase at STPsolidliquid
Electron configuration[Xe]6s24f75d1[Xe]6s24f145d10
Oxidation states[0, 1, 2, 3][-2, 1, 2]
Electronegativity (Pauling)1.22
Electron affinity0.132 eV-0.5 eV
Density7900 kg/m³1.353360e+4 kg/m³
Melting point1312.85 °C-38.83 °C
Boiling point3272.85 °C356.73 °C
Discovery year1886N/A