Europium (Eu)
Europium
Europium (Eu) is a lanthanide in period 6. Its relative atomic mass is 151.96 and the molar mass of the atom is 151.96 g/mol.
Atomic number 63
Atomic mass 151.96
Molar mass 151.96 g/mol
Category Lanthanide Solid
Properties of europium
| Atomic number | 63 |
|---|---|
| Symbol | Eu |
| Latin name | Europium |
| Relative atomic mass | 151.96 |
| Molar mass | 151.96 g/mol |
| Group, period, block | —, 6, f |
| Category | Lanthanide |
| State at 20 °C | Solid |
| Electron configuration | [Xe] 4f⁷ 6s² |
| Atomic radius | 185 pm |
Electron configuration of europium
Electrons per shell
K2L8M18N25O8P2
Full notation
1s² 2s² 2p⁶ 3s² 3p⁶ 3d¹⁰ 4s² 4p⁶ 4d¹⁰ 4f⁷ 5s² 5p⁶ 6s²
Noble-gas notation
63 protons · 63 electrons[Xe] 4f⁷ 6s²
Formula and compounds of europium
Simple substanceEueuropiumMolar mass of Eu: 151.96 g/mol
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Frequently asked questions
The relative atomic mass of europium is 151.96, so the molar mass of the atom is 151.96 g/mol.
Full: 1s² 2s² 2p⁶ 3s² 3p⁶ 3d¹⁰ 4s² 4p⁶ 4d¹⁰ 4f⁷ 5s² 5p⁶ 6s². Noble-gas notation: [Xe] 4f⁷ 6s².