| Content-Type | image/gif |
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| Content-Length | 587.09 kB |
| Size | 512x512 |
#63 Europium - rarity SPINNIN'IN
| 1st ionization energy | 5.670 eV | 0.85% |
|---|---|---|
| appearance | Silvery white metallic with pale yellow tint | 0.85% |
| atomic mass | 151.96 u | 0.85% |
| atomic number | 63 | 0.85% |
| atomic radius | 233 picometers (van der Waals radius) | 0.85% |
| boiling point | 1802 K or 1529 °C or 2784 °F | 0.85% |
| cas number | 7440-53-1 | 0.85% |
| cas number of (cl2) | - | 99.15% |
| category | Inner transition metals | 23.73% |
| crystal structure | BCC (Body centered cubic) | 7.63% |
| density | 5.25 g/cm3 | 0.85% |
| electronegativity | - | 21.19% |
| electronic configuration | [Xe] 4f7 6s2 | 0.85% |
| electrons | 63 | 0.85% |
| electrons arrangement | 2, 8, 18, 25, 8, 2 | 0.85% |
| main isotopes | 153Eu | 0.85% |
| melting point | 1099 K or 826 °C or 1519 °F | 0.85% |
| neutrons | 89 | 0.85% |
| position | Group: lanthanides, Period: 6, Block: f | 6.78% |
| rarity | SPINNIN'IN | 33.33% |
| state | Solid | 72.88% |
| sublimation point | - | 99.15% |
| symbol | Eu | 0.85% |
| valence electrons | - | 61.02% |
| who discovered | Eugene-Anatole Demarcay in 1896 | 0.85% |
Total Rarity Score: 1932.82
Rarity: #63/354