ગેલિયમ: આવૃત્તિઓ વચ્ચેનો તફાવત

'''Gallium''' ({{IPAc-en|icon|ˈ|ɡ|æ|l|i|ə|m}} {{respell|GAL|ee-əm}}) is a [[chemical element]] that has the symbol '''Ga''' and [[atomic number]] 31. Elemental gallium does not occur in nature, but as the gallium(III) salt in trace amounts in [[bauxite]] and [[zinc]] ores. A soft silvery metallic [[poor metal]], elemental gallium is a brittle solid at low temperatures. As it liquefies slightly above [[room temperature]], it will melt in the hand. Its melting point is used as a temperature reference point, and from its discovery in 1875 to the semiconductor era, its primary uses were in high-temperature thermometric applications and in preparation of metal alloys with unusual properties of stability, or ease of melting; some being liquid at room temperature or below. The alloy [[Galinstan]] (68.5% Ga, 21.5% In, 10% Sn) has a melting point of about {{convert|-19|°C|°F}}.