Neodymium vs Iridium

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PropertyNd NeodymiumIr Iridium
Atomic number6077
SymbolNdIr
NameNeodymiumIridium
Categorylanthanidetransition-metal
Standard Atomic Weight144.242 u192.217 u
Period66
GroupN/A9
Blockss
Phase at STPsolidsolid
Electron configuration[Xe]6s24f4[Xe]6s24f145d7
Oxidation states[0, 2, 3, 4][-3, -2, -1, 1, 2, 3, 4, 5, 6, 7, 8, 9]
Electronegativity (Pauling)1.142.2
Electron affinity1.913 eV1.565 eV
Density7010 kg/m³2.256220e+4 kg/m³
Melting point1020.85 °C2445.85 °C
Boiling point3073.85 °C4427.85 °C
Discovery year18411803