Cerium

Cerium Cerium Cerium is in the sixth period of the periodic table. It’s atomic number is fifty-eight, which means it has fifty-eight protons and electrons. It has an atomic mass of 140.12, giving it eighty-two neutrons. Cerium is a soft, iron gray metal of the rare earth group of chemical elements, also called the lanthanide series. It’s also a solid. Cerium was discovered in 1803 by Swedish chemist Jons Berzelius and geoligist Whilhelm Von Hisinger, and independently by German chemist Martin Klaproth. It was named for the asteroid Ceres, which was discovered in 1801. Pure cerium was prepared and produced in 1875 by Hillerbrand and Norton. Cerium is a natural element, opposed to synthetic, or man made. It is found in many minerals and is obtained commercially from the minerals, monazite, or phosphorus, and bastnasite. It has thirty known isotopes. Radioactive isotopes of cerium occur during the fission of uranium, thorium, and cerium, metal, elements, very, valance, structure, positive, point, minerals, lanthanide, it’s, isotopes, fifty-eight, farenheight, discovered, degrees, chemist, atomic, alloys, whilhelm, von, useful, uranium, unique, three, thorium, thirty, temperature, table, synthetic, swedish, stronger, strong, state, spectrometer, solid, cerium, soft, sixth, six, series, separating, self-cleaning, scratched, room, resistant, readily, rare-earth, rare, radioactive, pure, protons