Chemical Elements.com - Germanium (Ge)

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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

Number of Energy Levels: 4

First Energy Level:

Second Energy Level:

Third Energy Level:

Fourth Energy Level:

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

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