Samarium vs Tungsten

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PropertySm SamariumW Tungsten
Atomic number6274
SymbolSmW
NameSamariumTungsten
Categorylanthanidetransition-metal
Standard Atomic Weight150.36 u183.84 u
Period66
GroupN/A6
Blockss
Phase at STPsolidsolid
Electron configuration[Xe]6s24f6[Xe]6s24f145d4
Oxidation states[0, 1, 2, 3][-4, -2, -1, 0, 1, 2, 3, 4, 5, 6]
Electronegativity (Pauling)1.172.36
Electron affinity0.156 eV0.815 eV
Density7520 kg/m³1.930000e+4 kg/m³
Melting point1073.85 °C3421.85 °C
Boiling point1793.85 °C5554.85 °C
Discovery year18781781