| Content-Type | image/png |
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| Content-Length | 2.15 kB |
| Size | 512x512 |
#84 Polonium - rarity ZERO-KELVIN
| 1st ionization energy | 8.417 eV | 0.85% |
|---|---|---|
| appearance | Silvery-grey | 0.85% |
| atomic mass | 209 u | 0.85% |
| atomic number | 84 | 0.85% |
| atomic radius | 197 picometers (van der Waals radius) | 1.69% |
| boiling point | 1235 K or 962 °C or 1764 °F | 0.85% |
| cas number | 7440-08-6 | 0.85% |
| category | Chalcogens | 3.39% |
| crystal structure | SC (Simple cubic) | 2.54% |
| density | 9.16 g/cm3 | 0.85% |
| electronegativity | 2 (Pauling scale) | 1.69% |
| electronic configuration | [Xe] 4f14 5d10 6s2 6p4 | 0.85% |
| electrons | 84 | 0.85% |
| electrons arrangement | 2, 8, 18, 32, 18, 6 | 0.85% |
| main isotopes | 210Po | 0.85% |
| melting point | 527 K or 254 °C or 489 °F | 0.85% |
| neutrons | 125 | 2.54% |
| position | Group: 16, Period: 6, Block: p | 0.85% |
| rarity | ZERO-KELVIN | 33.33% |
| state | Solid | 72.88% |
| symbol | Po | 0.85% |
| valence electrons | 6 | 4.24% |
| who discovered | Pierre Curie and Marie Curie (in 1898) | 1.69% |
Total Rarity Score: 1965.14
Rarity: #54/354