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General chemistry
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General chemistry
iodine
Chemistry; General chemistry
A chemical element with the symbol I and atomic number 53. Iodine and its compounds are primarily used in nutrition, and industrially in the production of acetic acid and certain polymers.
caesium
Chemistry; General chemistry
The chemical element with the symbol Cs and atomic number 55. It is a soft, silvery-gold alkali metal with a melting point of 28 °C (82 °F), which makes it one of only five elemental metals that are ...
barium
Chemistry; General chemistry
A chemical element with the symbol Ba and atomic number 56. It is the fifth element in Group 2, a soft silvery metallic alkaline earth metal.
lanthanum
Chemistry; General chemistry
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 the first element of the lanthanide ...
cerium
Chemistry; General chemistry
A chemical element with the symbol Ce and atomic number 58. It is a soft, silvery, ductile metal which easily oxidizes in air. Cerium was named after the dwarf planet Ceres (itself named for the ...
praseodymium
Chemistry; General chemistry
A chemical element that has the symbol Pr and atomic number 59. Praseodymium is a soft, silvery, malleable and ductile metal in the lanthanide group.
neodymium
Chemistry; General chemistry
A chemical element with the symbol Nd and atomic number 60. It is a soft silvery metal that tarnishes in air. Neodymium was discovered in 1885 by the Austrian chemist Carl Auer von Welsbach. It is ...
