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PERIODIC TABLE
Germanium
Atomic No. 32
Ge
Germanium
About Germanium
Germanium is a metalloid with atomic number 32 that commonly forms compounds in the +4 oxidation state. Elemental germanium is used in infrared optics and semiconductor technologies, while germanium compounds are important in telecommunications optical fiber manufacture. These applications depend on controlling optical transmission, refractive index or electronic behavior through material composition and purity.
Properties
- Atomic Number
- 32
- Atomic Symbol
- Ge
- Atomic Mass
- 72.64
- CAS No.
- 7440-56-4
- Density
- 5.323 g/cm³
- Series
- metalloid
- Melting Point
- 938.3°C
- Boiling Point
- 2,820°C
- Thermal Conductivity
- 0.6 W/cm °C
- Heat of Fusion
- 31.8 kJ/mol
- Heat of Vaporization
- 334 kJ/mol
- Electronegativity
- 2.01 pauling
- Crystal Structure
- Cubic
- Electric Type
- Semiconductor
- Electrical Conductivity
- 2000 S/m
- Resistivity
- 500 nΩ·m at 20°C
Germanium Products
Browse Lorad materials associated with Germanium and refine the list by chemistry, application, or availability.
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