![[ATOM]](atom.gif) |
Gallium
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Information valid for Ga-70 unless otherwise noted
Basic Information
Symbol: Ga
Atomic Number: 31
Mass: 69.723
Melting Point: 29.78 C
Boiling Point: 2403.0 C
Number of Protons/Electrons: 31
Number of Neutrons: 39
Classification: Other Metals
Crystal Structure: Orthorhombic
Density @ 293 K: 5.907 g/cm3
Color: White/Silver
Atomic Structure
![[Bohr Model of Gallium]](b0031.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: 3
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Isotopes
| Isotope |
Half Life |
| Ga-66 |
9.5 hours |
| Ga-67 |
3.3 days |
| Ga-68 |
1.1 hours |
| Ga-69 |
Stable |
| Ga-71 |
Stable |
| Ga-72 |
14.1 hours |
Facts
Date of Discovery: 1875
Discoverer: Paul Emile Lecoq de Boisbaudran
Name Origin: From the Latin word Gallia, the old name of France
Uses: semiconductor production
Obtained From: bauxite, germanite, coal