Which Happened First?

Discovery of europium

Discovery of europium
Image: Alchemist-hp (www.pse-mendelejew.de) · CC BY-SA 3.0 de · source

Europium is a chemical element; it has symbol Eu and atomic number 63. It is a soft, silvery-white lanthanide metal that tarnishes rapidly in air and is the most chemically reactive of the lanthanides.

Summary from Wikipedia (CC BY-SA 4.0) · Dates from Wikidata (CC0)

Which happened first?

Timeline

  1. Discovery of neon1898
  2. Discovery of radium1898
  3. Discovery of xenonJuly 12, 1898
  4. Discovery of actinium1899
  5. Discovery of radon1899
  6. Discovery of europium (this page)1901

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Discovery of europium (1901) · Which Happened First?