Lanthanum vs Rhenium

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PropertyLa LanthanumRe Rhenium
Atomic number5775
SymbolLaRe
NameLanthanumRhenium
Categorylanthanidetransition-metal
Standard Atomic Weight138.90547 u186.207 u
Period66
GroupN/A7
Blockss
Phase at STPsolidsolid
Electron configuration[Xe]6s25d1[Xe]6s24f145d5
Oxidation states[0, 1, 2, 3][-3, -1, 0, 1, 2, 3, 4, 5, 6, 7]
Electronegativity (Pauling)1.11.9
Electron affinity0.47 eV0.15 eV
Density6150 kg/m³2.080000e+4 kg/m³
Melting point917.85 °C3185.85 °C
Boiling point3463.85 °C5595.85 °C
Discovery year18391925