Europium is a chemical element with the symbol Eu and atomic number 63. Europium is a silvery-white metal of the lanthanide series that reacts readily with air to form a dark oxide coating. It is the most chemically reactive, least dense, and softest of the lanthanide elements. It is soft enough to be cut with a knife. Europium was isolated in 1901 and named after the continent of Europe.  Europium usually assumes the oxidation state +3, like other members of the lanthanide series, but compounds having oxidation state +2 are also common. All europium compounds with oxidation state +2 are slightly reducing.  Europium has no significant biological role and is relatively non-toxic compared to other heavy metals. Most applications of europium exploit the phosphorescence of europium compounds.   Europium is one of the rarest of the rare-earth elements on EarthATT) provides Europium and compounds at a competitive price, including Europium Acetate, Europium Carbonate, Europium Chloride, Europium Fluoride, Europium Hydroxide, Europium Metal, Europium Nitrate, Europium Oxalate, Europium Oxide, Europium Sulfate