Germanium
Ge
Chemical name
Germanium
Mineral name
Germanium
Chemical formula
Ge
Melting point [°C]
956, 959, 942, 938
Crystal system
cubic (Diamond)
Molecular weight [g/mol]
72.59
Mohs hardness
780 (Knoops hardness)
Density [g/cm3]
5.323
Refractive Index
n=4.0034 at 9.72 μm; n=4.0028 at 10.6 μm
Electrical Resistance
30 Ωcm