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Germanium at Chemical Elements.com
Basic Information | Atomic Structure | Isotopes | Related Links | Citing This Page

Basic Information

Name: Germanium
Symbol: Ge
Atomic Number: 32
Atomic Mass: 72.61 amu
Melting Point: 937.4 °C (1210.55 K, 1719.3201 °F)
Boiling Point: 2830.0 °C (3103.15 K, 5126.0 °F)
Number of Protons/Electrons: 32
Number of Neutrons: 41
Classification: Metalloid
Crystal Structure: Cubic
Density @ 293 K: 5.323 g/cm3
Color: grayish

Atomic Structure

[Bohr Model of Germanium]  
Number of Energy Levels: 4

    First Energy Level: 2
    Second Energy Level: 8
    Third Energy Level: 18
    Fourth Energy Level: 4


Isotope Half Life
Ge-68270.8 days
Ge-691.6 days
Ge-7111.4 days
Ge-7711.3 hours


Date of Discovery: 1886
Discoverer: Clemens Winkler
Name Origin: From the Latin word Germania, meaning Germany
Uses: semiconductors
Obtained From: refining of copper, zinc, lead

Related Links

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