Germanium vs Arsenic

Side-by-side comparison of Germanium (Ge, element 32) and Arsenic (As, element 33) by atomic structure and physical properties.

← Back to Periodic Table
PropertyGe Germanium As Arsenic
Atomic number3233
SymbolGeAs
NameGermaniumArsenic
Categorymetalloidmetalloid
Standard Atomic Weight72.63 u74.921595 u
Period44
Group1415
Blockpp
Phase at STPSolidSolid
Electron configuration[Ar]3d104s24p2[Ar]3d104s24p3
Oxidation states[-4, -3, -2, -1, 0, 1, 2, 3, 4][-3, -2, -1, 0, 1, 2, 3, 4, 5]
Electronegativity (Pauling)2.012.18
Electron affinity1.232 eV0.81 eV
Density5323.4 kg/m³5776 kg/m³
Melting point938.25 °C816.85 °C
Boiling point2832.85 °C613.85 °C
Discovery year18861250

Key Differences

PropertyGe GermaniumAs Arsenic
Standard Atomic Weight72.63 u ↓ lower74.921595 u ↑ higher
Density5323.4 kg/m³ ↓ lower5776 kg/m³ ↑ higher
Melting point938.25 °C ↑ higher816.85 °C ↓ lower
Boiling point2832.85 °C ↑ higher613.85 °C ↓ lower
Electronegativity (Pauling)2.01 ↓ lower2.18 ↑ higher
Electron affinity1.232 eV ↑ higher0.81 eV ↓ lower
Group14 15
Electron configuration[Ar]3d104s24p2 [Ar]3d104s24p3
Discovery year1886 1250