Gallium is a chemical element; it has the symbol Ga and atomic number 31. Discovered by the French chemist Paul-Émile Lecoq de Boisbaudran in 1875, [13] elemental gallium is a soft, silvery metal at standard temperature and pressure. In its liquid state, it becomes silvery white. If enough force is applied, solid gallium may fracture conchoidally.

3 天之前 · gallium (Ga), chemical element, metal of main Group 13 (IIIa, or boron group) of the periodic table. It liquefies just above room temperature. Gallium was discovered (1875) by French chemist Paul-Émile Lecoq de Boisbaudran, who observed its principal spectral lines while examining material separated from zinc blende.

Gallium is bluish silver metal. It is soft at STP (standard temperature and pressure), while at low temperature, it acquires a brittle solid state. Gallium also exists in liquid form at temperature more than 29.76 °C. When gallium is held in the hand, it melts and …

Gallium is a soft, silvery-white metal, similar to aluminium. Gallium arsenide has a similar structure to silicon and is a useful silicon substitute for the electronics industry. It is an important component of many semiconductors. It is also used in red LEDs (light emitting diodes) because of its ability to convert electricity to light.

2018年5月23日 · Lecoq de Boisbaudran did not discover gallium by accident. For 15 years, he had been studying the spectra of the chemical elements. Spectra (singular: spectrum) are the lines produced when chemical elements are heated. Each element produces its own distinctive set of lines, or spectra.

Gallium is a silvery white low-melting point metal (Fig. 1) belonging to the less typical metals group, i.e., when it loses its outermost electrons it will not have the electronic structure of inert gases. There is a volume expansion of 3.2% on solidification of the metal. Gallium is as a by-product of the production of aluminum oxide.

Gallium is a soft, silvery metallic element with an atomic number of 31 and the chemical symbol Ga. The French chemist Paul-Emile Lecoq de Boisbaudran discovered gallium in sphalerite (a zinc-sulfide mineral) in 1875 using spectroscopy. He named the element “gallia” after his native land of France (formerly Gaul; in Latin, Gallia).

Gallium is a silvery, glass-like, soft metal. It sits close to the non-metals in the periodic table and its metallic properties aren’t as obviously metallic as most other metals. Solid gallium is brittle and is a poorer electrical conductor than lead. The solid metal fractures conchoidally.

2013年12月27日 · Gallium is magnetic and a good conductor of both electricity and heat. There are a few minerals in which gallium forms a significant part. The main gallium-bearing mineral is gallite. Gallium is recovered as a by-product of processing bauxite or sphalerite (ZnS) and is found in uneconomic quantities elsewhere.

Gallium is a chemical element; it has the symbol Ga and atomic number 31. Discovered by the French chemist Paul-Émile Lecoq de Boisbaudran in 1875, elemental gallium is a soft, silvery metal at standard temperature and pressure. In its liquid state, it becomes silvery white. If enough force is applied, solid gallium may fracture conchoidally.