![[ATOM]](atom.gif) |
Germanium
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Information valid for Ge-73 unless otherwise noted
Basic Information
Symbol: Ge
Atomic Number: 32
Mass: 72.61
Melting Point: 937.4 C
Boiling Point: 2830.0 C
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]](b0032.gif) |
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Number of Energy Levels: 4
First Energy Level: 2
Second Energy Level: 8
Third Energy Level: 18
Fourth Energy Level: 4
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Isotopes
| Isotope |
Half Life |
| Ge-68 |
270.8 days |
| Ge-69 |
1.6 days |
| Ge-70 |
Stable |
| Ge-71 |
11.4 days |
| Ge-72 |
Stable |
| Ge-73 |
Stable |
| Ge-74 |
Stable |
| Ge-76 |
Stable |
| Ge-77 |
11.3 hours |
Facts
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