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Europium

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  • Europium is a chemical element with the symbol Eu, Atomic Number 63, Atomic Weight 151.964, Melting Point 1095 K (822C or 1512F), Boiling Point 1802 K (1529C or 2784F).
  • Europium is a soft silvery metal.

  • Europium has been identified spectroscopically in the sun and certain stars.

  • Europium is one of the less abundant rare-earth elements.

  • Europium is never found in nature as the free element, but there are many elements containing Europium.

  • Europium salts could be mildly toxic by ingestion, but its toxicity has not been fully investigated.

  • Europium becomes a superconductor when it is cooled below 1.8 K and compressed to above 80 GPa.

  • Europium used in nuclear reactors control rods.

  • Europium phosphors are used in television tubes to give a bright red colour and as an activator for yttrium-based phosphors.

  • The three key isotopes of Europium are 151Eu, 152Eu, and 153Eu.

  • Europium is irritating to the eyes, skin, and respiratory system.

  • Europium can be taken into the body by eating food, drinking water, or breathing air.

  • Europium is the most active of the lanthanides.

  • The most common ores of europium are monazite, bastnasite, and gadolinite.

  • Europium is prepared by heating its oxide with lanthanum metal.

  • Europium reacts strongly with oxygen in the air, catching fire spontaneously.

  • Europium is found in a variety of ores, primarily bastnasite, monazite, and xenotime.

  • Europium-152, europium-154, and europium-155 are produced primarily as fission products, europium-152 can also be produced by neutron activation of nuclear reactor control rods.

  • Europium is not found in nature as a free element.

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