Europium (Eu)

By Matt Rebuck

Big image

Basic Facts

It is number 63 on the periodic table, and is located in the lanthanides section (the upper row of the rectangle on the bottom). It has an atomic mass of 151.964 and an atomic radius of 231 pm. It can most commonly be found in the minerals monazite and bastnaesite, although it is still quite rare (hence why it is a "rare earth metal").



  • Melting Point: 822°C
  • Boiling Point: 1527°C
  • Conductivity: High conductivity
  • Malleability: High malleability
  • Hardness: About as hard as lead; really soft for a metal
  • Shape: Cubic shape


  • Reactivity: Reacts well with both water and air
  • Flammability: Ignites from 150 - 180°C


Europium was discovered in 1901in France by a scientist named Eugene-Anatole Demarcay. If it weren't for the discovery of cerium in 1803 (an impure substance), Europium would never have been discovered. Since cerium wasn't pure, a bunch of scientists kept splitting it into simpler substances until the pure element Europium was discovered nearly a century later.