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Gallium

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Gallium
Gallium
General Info
Atomic Symbol Ga
Atomic Number 31
Atomic Weight 69.723 g/mol69.723 amu
Chemical series poor metals
Appearance silvery white
Group, Period, Block 13, 4, p
Electron configuration [Ar] 3d10 4s2 4p1
Electrons per shell 2,8,18,3
CAS number 7440-55-3
Physical properties
Phase solid
Density 5.91 g/ml
Melting point 302.9146 K29.765 °C
85.576 °F
545.246 °R
Boiling point 2477 K2,203.85 °C
3,998.93 °F
4,458.6 °R
Isotopes of Gallium
iso NA half-life DT DE (MeV) DP
is stable with neutrons.
All properties are for STP unless otherwise stated.

Gallium is a chemical element with the symbol Ga and the atomic number is 31. Gallium is a rare soft silver true metal. At low temperatures it is brittle but at above room temperature it is a liquid. Paul-Emile Lecoq de Boisbaudran in 1875 in France.

Gallium is never found as free form in nature. It is found and extracted as a trace component in these compunds (Baucite, Coal, Diaspore, Germanite, and Sphalerite.) [1]

As a solid, gallium is seen as a blue gray metal with orthorhombic crystalline structure. Gallium is only a silver color when it is in its purest form. gallium takes the solid form at room teperature, butwiththe slightest heat added it chages to a liqued form along with mercury, cesium, and rubidium. when a solid gallium can be cut with a nife, it reacts with and disolves in acids and alkalis. [2]

Uses

Gallium is used to wet glass or porcelain to form a brilliant moirror when painted on glass.

References


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