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Prediction of Mendeleev

Prior to the discovery of gallium, its existence and basic properties were predicted by Dmitri Mendeleev. He named the hypothetical element eka-aluminum because he predicted that the element would be located below aluminum on the periodic table.

Discovery and properties

Gallium was discovered by French chemist Paul E. Lecoq de Boisbaudran through a spectroscope in 1875 in Paris. It is characterized by two violet lines in the spectrum. Bouabodrand extracted gallium from a zinc mixture, initially obtaining only 0.65 grams from 430 kilograms of ore. The name of the metal comes from the Latin word "Gallia," meaning "France." This metal does not exist in nature in its free form, and does not form minerals with any significant content. It is extracted as a by-product of the production of aluminum and zinc, as well as from coal dust.

Technical Characteristics

It is a silvery, shiny, soft non-toxic metal. It is close to the non-metals in the periodic table, and its metallic properties are not as pronounced. It has the unusual property that it expands when it freezes. Solid gallium is a brittle metal with electrical conductivity lower than that of lead. It is one of the few metals that is liquid at room temperature (its melting point is only 29.76°C), so it melts in the hand. Other metals with this property are cesium, francium, and mercury. The company Evek GmbH offers to buy rare-earth metals. The price from the manufacturer. Supplier provides prompt delivery of products to any address.

Applications

Light fusible gallium alloys are used in some medical thermometers as a non-toxic substitute for mercury. Gallium arsenide is used in semiconductor manufacturing primarily for laser diodes, light-emitting diodes and solar panels. It is also used to make brilliant mirrors.

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