| Content-Type | image/png |
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| Content-Length | 8.31 kB |
| Size | 512x512 |
#81 Thallium - rarity ZERO-KELVIN
| 1st ionization energy | 6.108 eV | 0.85% |
|---|---|---|
| appearance | Silvery white metallic | 5.08% |
| atomic mass | 204.38 u | 0.85% |
| atomic number | 81 | 0.85% |
| atomic radius | 196 picometers (van der Waals radius) | 0.85% |
| boiling point | 1746 K or 1473 °C or 2683 °F | 0.85% |
| cas number | 7440-28-0 | 0.85% |
| cas number of (cl2) | - | 99.15% |
| category | Boron group | 3.39% |
| crystal structure | HCP (hexagonal close packed) | 7.63% |
| density | 11.85 g/cm3 | 0.85% |
| electronegativity | 1.62 (Pauling scale) | 0.85% |
| electronic configuration | [Xe] 4f14 5d10 6s2 6p1 | 0.85% |
| electrons | 81 | 0.85% |
| electrons arrangement | 2, 8, 18, 32, 18, 3 | 0.85% |
| main isotopes | 205Tl | 0.85% |
| melting point | 577 K or 304 °C or 579 °F | 0.85% |
| neutrons | 123 | 0.85% |
| position | Group: 13, Period: 6, Block: p | 0.85% |
| rarity | ZERO-KELVIN | 33.33% |
| state | Solid | 72.88% |
| sublimation point | - | 99.15% |
| symbol | Tl | 0.85% |
| valence electrons | 3 | 4.24% |
| who discovered | William Crookes (in 1861) | 0.85% |
Total Rarity Score: 2098.27
Rarity: #23/354