| Content-Type | image/png |
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| Content-Length | 5.66 kB |
| Size | 512x512 |
#21 Scandium - rarity ZERO-KELVIN
| 1st ionization energy | 6.56 eV | 0.85% |
|---|---|---|
| appearance | Silvery white | 6.78% |
| atomic mass | 44.956 u | 0.85% |
| atomic number | 21 | 0.85% |
| atomic radius | 211 picometers (van der Waals radius) | 1.69% |
| boiling point | 3109 K or 2836 °C or 5136 °F | 0.85% |
| cas number | 7440-20-2 | 0.85% |
| cas number of (cl2) | - | 99.15% |
| category | Transition metals | 25.42% |
| crystal structure | HCP (Hexagonal closed packing) | 3.39% |
| density | 2.985 g/cm3 | 0.85% |
| electronegativity | 1.36 (Pauling scale) | 1.69% |
| electronic configuration | [Ar] 3d1 4s2 | 0.85% |
| electrons | 21 | 0.85% |
| electrons arrangement | 2, 8, 9, 2 | 0.85% |
| main isotopes | 45Sc | 0.85% |
| melting point | 1814 K or 1541 °C or 2806 °F | 0.85% |
| neutrons | 24 | 0.85% |
| position | Group: 3, Period: 4, Block: d | 0.85% |
| rarity | ZERO-KELVIN | 33.33% |
| state | Solid | 72.88% |
| sublimation point | - | 99.15% |
| symbol | Sc | 0.85% |
| valence electrons | 2 | 7.63% |
| who discovered | Lars Frederik Nilson in 1879 | 0.85% |
Total Rarity Score: 1955.68
Rarity: #59/354