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Definition of europium : A metallic element of the rare- earth group, discovered spectroscopically by Demarcay in 1896. Symbol, Eu; at. wt., 152. 0.

Synonyms:

atomic number 63, Eu

fermium, iridium, cobalt, zinc, neon, arsenic, carbon, argon, beryllium, silver, polonium, boron, promethium, platinum, antimony, radium, americium, chlorine, sulfur, mendelevium, tellurium, cadmium, erbium, copper, technetium, praseodymium, magnesium, cesium, fluorine, gold, nickel, oxygen, lithium, thallium, palladium, mercury, californium, rhodium, xenon, berkelium, curium, thulium, ruthenium, lutetium, germanium, nitrogen, manganese, molybdenum, krypton, uranium, phosphorus, tin, bromine, terbium, cerium, lanthanum, niobium, hydrogen, scandium, potassium, rubidium, thorium, holmium, osmium, strontium, indium, iodine, neptunium, hafnium, helium, vanadium, sodium, bismuth, neodymium, rhenium, ytterbium, einsteinium, gallium, calcium, nobelium, plutonium, titanium, dysprosium, lead, gadolinium, iron, chromium, selenium, aluminum, yttrium, tungsten, silicon, astatine, actinium, tantalum, francium, barium, radon, zirconium, samarium, element, protactinium