Also known as: AT^
AT has various meanings in the Chemistry category. Discover the full forms, definitions, and usage contexts of AT in Chemistry.
Symbol:"At" Atomic Number:"85" Atomic Mass: (210)amu. Astatine is a member of the halogen group. This element is often found during reactions with uranium in nuclear reactors. It is not found in nature and has no uses.
ChemistryGaseous envelope surrounding Earth Consists of two layers; the lower, or troposphere, and the upper, or stratosphere. Weight of atmosphere on each square inch of Earth's surface is approx 14.1 Ib at sea level. The Earth's atmosphere is 120 miles thick and is composed mainly of nitrogen, oxygen, carbon dioxide, and a few other trace gases.
ChemistryA white, odorless, tasteless powder; AsO3 . Used in the manufacture of pigments, glass, and other arsenic compounds, ceramic enamels, and aniline colors; mixed with soda ash for boiler compounds. Syn: white arsenic; arsenious oxide
ChemistryThe number of protons in an atomic nucleus, which determines the individuality of the atom as a chemical element.
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