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Atomic Symbol - Ga
Atomic weight - 69.723
Atomic number - 31
Electron configuration - 2-8-18-3
Oxidation states - +3
State of matter - solid
Heavy metal-low melting
Discovered in 1875 by Paul-Émile Lecoq de Boisbaudran
Boils at 2403 °C, melts at 29.78 °C
Notes:
Gallium liquifies just above room temperature. It is silvery white, and soft enough to be cut with a knife. It may take on a bluish tinge due to superficial oxidation. Gallium expands when solidified and supercools readily, sustaining its liquid form as low as 0 °C. It can be used as a coating for optical mirrors, as a liquid seal in strongly heated apparatus, and a substitute for mercury in ultraviolet lamps.
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