Europium is a chemical element that has an atomic number (Z) 63. Its atomic mass is 151.96 g/mol and it is represented by the symbol Eu. Europium in periodic table can be found in lanthanide series. It is an f-block element and in period 6. The electronic configuration of Europium is 1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6 4d10 5s2 5p6 4f7 5d0 6s2. In an electrically europium atom there are 63 electrons and 63 protons. There is an average number of 88 neutrons in europium. The Oxidation states of europium are 0, +2, +3. Its electronegativity is 1.2 (Pauling scale). There are two isotopes europium which is naturally occuring, Eu-151 and Eu-153.

Europium is solid at STP and has a density of 5.264 g/cm3. The melting point of europium is 1099 K ?(826 °C, ?1519 °F) and its boiling point is 1802 K ?(1529 °C, ?2784 °F). Europium was discovered by a french chemist Eugène-Anatole Demarçay in 1896 and was isolated in 1901. This new element was named after Europe. 99.998% pure europium has a silvery yellow colour. It is by far the most reactive element and softest of the lanthanide series. It reacts with air and moisture, to protect it, it is encase in inert fluid.

It is a very rare element and can not be found in free elemental form in nature. It can be extracted from ores such as  bastnäsite, monazite, xenotime and loparite-(Ce). The largest deposits of euporium are found in Bayan Obo iron ore deposit in Inner Mongolia with an estimated 36 million tonnes of rare-earth element oxides. The second largest mine was mountain pass mine California.


Who discovered europium?


Europium was discovered and isolated by French chemist Eugène-Anatole Demarçay.


When was europium discovered?

Europium was discovered in 1896 and was first isolated in 1901.


What is the atomic mass of europium?

The atomic mass of europium is 151.96 g/mol.


Where is europium found?

Eupoium does not found in free elemental  form in nature. It is found in combined form with other elements in minerals such as loparite-(Ce), xenotime, bastnäsite and monazite. The largest known deposits of rare earth elements are in Inner Mongolia (Bayan Obo).


How many neutrons does europium have?

Euporium has 89 electrons. There are two stable isotopes of Euporium, Eu-151 and Eu-153. Eu-151 has 88 neutrons and Eu=153 has 90 neutrons.