Germanium vs Iridium

PropertyGe GermaniumIr Iridium
Atomic number3277
SymbolGeIr
NameGermaniumIridium
Categorymetalloidtransition-metal
Standard Atomic Weight72.63 u192.217 u
Period46
Group149
Blockps
Phase at STPsolidsolid
Electron configuration[Ar]4s23d104p2[Xe]6s24f145d7
Oxidation states[-4, -3, -2, -1, 0, 1, 2, 3, 4][-3, -2, -1, 1, 2, 3, 4, 5, 6, 7, 8, 9]
Electronegativity (Pauling)2.012.2
Electron affinity1.232 eV1.565 eV
Density5323.4 kg/m³2.256220e+4 kg/m³
Melting point938.25 °C2445.85 °C
Boiling point2832.85 °C4427.85 °C
Discovery year18861803