Europium Eu
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Electron 24
Electron 25
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Europium is a chemical element with symbol Eu and atomic number 63. It was isolated in 1901 and is named after the continent of Europe. It is a moderately hard, silvery metal which readily oxidizes in air and water.
63
Atomic Number
151.96 u
Atomic Mass
1095.15 K
Melting Point
1802 K
Boiling Point
5.26 g/cm³
Density
2.6 Å
Atomic Radius
1.98 Å
Covalent Radius
1.2
Electronegativity
5.67 eV
First Ionization Energy
11.2
Electron Affinity
6
Number of Shells
2, 8, 18, 25, 8, 2
Electron Shell Occupations
0.18 J/g
Specific Heat