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Europium (Eu)
Atomic number: 63 · Category: lanthanide · Group 3 · Period 6 · Phase: Solid
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.
Block: f
Molar heat: 27.66
CPK color:#61ffc7
Electronic structure
Electron configuration: 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s2 4f7
Configuration (semantic): [Xe] 4f7 6s2
Shells: 2, 8, 18, 25, 8, 2
Electronegativity (Pauling): 1.2
Electron affinity: 11.2
Ionization energies: 547.1, 1085, 2404, 4120
Periodic position
Group: 3
Period: 6
xpos: 9
ypos: 9
Spectral/Bohr images
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3D Model