Transcript Uses

31
Ga
69.723
Gallium
By: Alexis Paxton
Mr. Manning
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Gallium wets glass or porcelain, and forms a
brilliant mirror when it is painted on glass
Used for doping semiconductors and
producing solid-state devices such as
transistors
Gallium arsenide converts electricity into
coherent light
Alloying
90 tons of gallium (2 or 3 years of world
production) is used to detect solar neutrinos
by the use of the reaction: nu + 71Ga > 71Ge
+ e-. The rate, although very low (less than 1
interaction per day in 30 tonnes of Ga) makes
gallium unique for this purpose. Two
experiments are running : - GALLEX using 30
tons in the Gran Sasso underground laboratory
(Italy) and SAGE with 60 tons in the Baksan
laboratory in Caucasus (Russia). [thanks
Michel]
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Melting Point: 29.78 °C (302.93 K, 85.604004 °F)
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Boiling Point: 2403.0 °C (2676.15 K, 4357.4 °F)
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Number of Protons/Electrons: 31
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Number of Neutrons: 39
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Density @ 293 K: 5.907 g/cm3
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Color: White/Silver
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Date of Discovery: 1875
Discoverer: Paul Emile Lecoq de Boisbaudran
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Name Origin: From the Latin word Gallia, the old name of France
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Uses: semiconductor production
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Obtained From: bauxite, germanite, coal
Gallium poem!
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Gallium was discpvered in 1875
By Paul Emily Lecoq De Boisbaudran.
Gallium has alloying that it contains.
Its symbol is GA
And is used to wet glass and is brillant mirror when painted on glass!!
SOURCES
 http://www.theodoregray.com/PeriodicTable/Elements/031/index.s7.html
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http://www.chemicalelements.com/index.html
 http://www.webelements.com/webelements/scholar/elements/periodictable/uses.html