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#73 Tantalum - rarity BROWNIAN-MANIACS
| 1st ionization energy | 7.89 eV | 0.85% |
|---|---|---|
| appearance | Gray metallic with bluish tint | 0.85% |
| atomic mass | 180.95 u | 0.85% |
| atomic number | 73 | 0.85% |
| atomic radius | 217 picometers (van der Waals radius) | 2.54% |
| boiling point | 5731 K or 5458 °C or 9856 °F | 0.85% |
| cas number | 7440-25-7 | 0.85% |
| cas number of (cl2) | - | 99.15% |
| category | Transition metals | 25.42% |
| crystal structure | BCC (Body centered cubic) | 7.63% |
| density | 16.65 g/cm3 | 0.85% |
| electronegativity | 1.5 (Pauling scale) | 1.69% |
| electronic configuration | [Xe] 4f14 5d3 6s2 | 0.85% |
| electrons | 73 | 0.85% |
| electrons arrangement | 2, 8, 18, 32, 11, 2 | 0.85% |
| main isotopes | 181Ta | 0.85% |
| melting point | 3290 K or 3017 °C or 5463 °F | 0.85% |
| neutrons | 108 | 0.85% |
| position | Group: 5, Period: 6, Block: d | 0.85% |
| rarity | BROWNIAN-MANIACS | 33.33% |
| state | Solid | 72.88% |
| sublimation point | - | 99.15% |
| symbol | Ta | 0.85% |
| valence electrons | - | 61.02% |
| who discovered | Anders Gustaf Ekeberg (in 1802) | 0.85% |
Total Rarity Score: 2011.41
Rarity: #44/354