Gallium

Statistics:

• Name: Gallium
• Symbol: Ga
• Classification: Poor Metals
• Atomic Number: 31
• Atomic Mass: 69.723 g/mol
• Density: 5.91 g/cm³
• Melting: 29.8°C
• Boiling: 2403°C
• Protons & Electrons:31
• Neutrons:39
• Discovered: 1875
• Discovered By: Lecoq de Boisbaudran
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Electrons Per Energy Level:

• Level 1: 2
• Level 2: 8
• Level 3: 18
• Level 4: 3

Isotopes:

Isotope: Half-life

• ⁶⁶Ga: 9.49 hours
• ⁶⁷Ga: 3.2612 days
• ⁶⁸Ga: 67.629 minutes
• ⁶⁹Ga: stable
• ⁷¹Ga: stable
• ⁷²Ga: 14.10 hours

Brief Summary

Gallium is a Poor Metals with the symbol 'Ga' and contains 31 Protons & Electrons with 39 neutrons in the nucleus of the atom. Gallium has an atomic mass of 69.723 g/mol and, at a temperature of 20°C, has a density of 5.91 g/cm³. It will melt at a temperature of 29.8°C and boil at 2403°C.

Gallium was discovered by Lecoq de Boisbaudran in 1875 and is named 'Gallium' Latin word "Gallia", an old name for "France".

Some common usages for Gallium: semiconductor production.

Definitions and Notes

Density listed is at a temperature of 20°C.

Isotopes are forms of an element who have the same atomic number but different mass because they contain different number of neutrons.

Half-life is the time required for a quantity of a subject to fall to half of its current quantity.

MLA Citing Format

Gallium :: Ga :: 31 - Chemical Element. 11 Mar. 2010 <http://www.chemicalelement.com/element/gallium.html>.