Gadolinium vs Rhenium

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PropertyGd GadoliniumRe Rhenium
Atomic number6475
SymbolGdRe
NameGadoliniumRhenium
Categorylanthanidetransition-metal
Standard Atomic Weight157.25 u186.207 u
Period66
GroupN/A7
Blockss
Phase at STPsolidsolid
Electron configuration[Xe]6s24f75d1[Xe]6s24f145d5
Oxidation states[0, 1, 2, 3][-3, -1, 0, 1, 2, 3, 4, 5, 6, 7]
Electronegativity (Pauling)1.21.9
Electron affinity0.132 eV0.15 eV
Density7900 kg/m³2.080000e+4 kg/m³
Melting point1312.85 °C3185.85 °C
Boiling point3272.85 °C5595.85 °C
Discovery year18861925