Name Germanium
Symbol Ge
Atomic Number 32
Atomic Mass 72.61 atomic mass unit
Number of Protons 32
Number of Neutrons 41
Number of Electrons 32
Melting Point 937.4 C
Boiling Point 2830.0 C
Density 5.323 grams per cubic centimeter
Normal Phase Solid
Family Metalloids
Period 4
Cost $460 per kilogram



Origin of Name From the Latin word Germania, meaning Germany
Date and Place of Discovery In 1886 in Germany
Discovered by Clemens Alexander Winkler
Common Compounds
Interesting facts
  • In its natural state it is brittle and crystalline.
  • It is a gray-white metalloid.
  • It is less abundant than either tin or lead.  Its ores are rare.
  • It's an element that was predicted by Mendeleev in 1871.
Common Uses
  • Electronic applications when combined with arsenic or gallium
  • Semiconductors
  • Transistors
  • Component of wide-angle camera lenses and microscope objectives
  • Chemotherapy
  • Infrared products like spectroscopes
  • Wide angle lenses


Photo Courtesy of
Chemical Elements
Corrosion Source
Los Alamos National Labs

Germanium Atomic Structure Elements by Name Elements by Number Home