| Content-Type | image/png |
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| Content-Length | 2.15 kB |
| Size | 512x512 |
#65 Terbium - rarity ZERO-KELVIN
| 1st ionization energy | 5.864 eV | 0.85% |
|---|---|---|
| appearance | Silvery white metallic surface | 3.39% |
| atomic mass | 158.93 u | 0.85% |
| atomic number | 65 | 0.85% |
| atomic radius | 221 picometers (van der Waals radius) | 2.54% |
| boiling point | 3396 K or 3123 °C or 5653 °F | 0.85% |
| cas number | 7440-27-9 | 0.85% |
| category | Inner transition metals | 23.73% |
| crystal structure | HCP (Hexagonal close packed) | 5.93% |
| density | 8.22 g/cm3 | 0.85% |
| electronic configuration | [Xe] 4f9 6s2 | 0.85% |
| electrons | 65 | 0.85% |
| electrons arrangement | 2, 8, 18, 27, 8, 2 | 0.85% |
| main isotopes | 159Tb | 0.85% |
| melting point | 1629 K or 1356 °C or 2473 °F | 0.85% |
| neutrons | 94 | 0.85% |
| position | Group: lanthanides, Period: 6, Block: f | 5.08% |
| rarity | ZERO-KELVIN | 33.33% |
| state | Solid | 72.88% |
| symbol | Tb | 0.85% |
| who discovered | Carl Gustaf Mosander in 1843 | 0.85% |
Total Rarity Score: 1765.94
Rarity: #81/354