Lanthanum (pronounced /ˈlænθənəm/) is a chemical element with the symbol La and atomic number 57. Lanthanum is a silvery white metallic element that belongs to group 3 of the periodic table and is a lanthanoid. It is found in some rare-earth minerals, usually in combination with cerium and other rare earth elements. Lanthanum is malleable, ductile, and soft metal, which oxidizes rapidly when exposed to air. It is produced from minerals monazite a...
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Lanthanum (pronounced /ˈlænθənəm/) is a chemical element with the symbol La and atomic number 57. Lanthanum is a silvery white metallic element that belongs to group 3 of the periodic table and is a lanthanoid. It is found in some rare-earth minerals, usually in combination with cerium and other rare earth elements. Lanthanum is malleable, ductile, and soft metal, which oxidizes rapidly when exposed to air. It is produced from minerals monazite and bastnäsite using a complex multistage extraction process. Lanthanum compounds have numerous applications such as catalyst, additives in glass, carbon lighting for studio lighting and projection, ignition element in lighters and torches, electron cathode, scintillator, and others. Lanthanum carbonate was approved as a medication against renal failure.
Lanthanum is soft, malleable, silvery white metal which has hexagonal crystal structure at room temperature. At 310 °C, lanthanum changes to a face-centered cubic structure, and at 865 °C into...
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