Name Gallium
Symbol Ga
Atomic Number 31
Atomic Mass 69.723 atomic mass units
Number of Protons 31
Number of Neutrons 39
Number of Electrons 31
Melting Point 29.78 C
Boiling Point 2403.0 C
Density 5.907 grams per cubic centimeter
Normal Phase Solid
Family Other Metals
Period 4
Cost $220 per 100 grams



Origin of Name From the Latin word Gallia, the old name of France
Date and Place of Discovery In 1875 in France
Discovered by Paul Emile Lecoq de Boisbaudran
Common Compounds
Interesting facts
  • It does not exist in free form in nature and there aren't any minerals with a lot of gallium in them.
  • It is found in bauxite, coal, diaspore, germanite, and sphalerite. It also can be found in zinc ore.
  • Dmitri Mendeleev predicted and described its existence even before it was discovered. He called it "eka-aluminum" because of its position on his periodic table.
Common Uses
  • Calculators
  • Wrist watches
  • Solar panels
  • Lasers
  • Semiconductors
  • Transistors
  • Glass or porcelain manufacture
  • Mirrors
  • Converts electricity into coherent light
  • Alloying


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Chemical Elements
MCP Group

Gallium Atomic Structure Elements by Name Elements by Number Home