| Content-Type | image/png |
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| Content-Length | 5.62 kB |
| Size | 512x512 |
#27 Cobalt - rarity ZERO-KELVIN
| 1st ionization energy | 7.881 eV | 0.85% |
|---|---|---|
| appearance | Bluish lustrous grey metallic | 0.85% |
| atomic mass | 58.933 u | 0.85% |
| atomic number | 27 | 0.85% |
| atomic radius | 192 picometers (van der Waals radius) | 1.69% |
| boiling point | 3200 K or 2927 °C or 5301 °F | 0.85% |
| cas number | 7440-48-4 | 0.85% |
| cas number of (cl2) | - | 99.15% |
| category | Transition metals | 25.42% |
| crystal structure | HCP (Hexagonal close packing) | 6.78% |
| density | 8.9 g/cm3 | 0.85% |
| electronegativity | 1.88 (Pauling scale) | 0.85% |
| electronic configuration | [Ar] 3d7 4s2 | 0.85% |
| electrons | 27 | 0.85% |
| electrons arrangement | 2, 8, 15, 2 | 0.85% |
| main isotopes | 59Co | 0.85% |
| melting point | 1768 K or 1495 °C or 2723 °F | 0.85% |
| neutrons | 32 | 0.85% |
| position | Group: 9, Period: 4, Block: d | 0.85% |
| rarity | ZERO-KELVIN | 33.33% |
| state | Solid | 72.88% |
| sublimation point | - | 99.15% |
| symbol | Co | 0.85% |
| valence electrons | - | 61.02% |
| who discovered | Georg Brandt in 1735 | 0.85% |
Total Rarity Score: 2091.71
Rarity: #24/354