| Content-Type | image/png |
|---|---|
| Content-Length | 4.57 kB |
| Size | 512x512 |
#8 Oxygen - rarity ZERO-KELVIN
| 1st ionization energy | 13.61 eV | 1.69% |
|---|---|---|
| appearance | Colorless gas | 7.63% |
| atomic mass | 15.999 u | 0.85% |
| atomic number | 8 | 0.85% |
| atomic radius | 152 picometers (van der Waals radius) | 0.85% |
| boiling point | 90.188 K or -182.962 °C or -297.332 °F | 0.85% |
| cas number | 7781-44-7 | 0.85% |
| cas number of (cl2) | - | 99.15% |
| category | Chalcogens | 3.39% |
| crystal structure | SC (Simple cubic) | 2.54% |
| density | 1.43 g/L | 0.85% |
| electronegativity | 3.44 (Pauling scale) | 0.85% |
| electronic configuration | [He] 2s2 2p4 | 0.85% |
| electrons | 8 | 0.85% |
| electrons arrangement | 2, 6 | 0.85% |
| main isotopes | 16O | 0.85% |
| melting point | 54.36 K or -218.79 °C or -361.82 °F | 0.85% |
| neutrons | 8 | 0.85% |
| position | Group: 16, Period: 2, Block: p | 0.85% |
| rarity | ZERO-KELVIN | 33.33% |
| state | Gas | 9.32% |
| sublimation point | - | 99.15% |
| symbol | O | 0.85% |
| valence electrons | 6 | 4.24% |
| who discovered | Carl Wilhelm Scheele in 1771 | 1.69% |
Total Rarity Score: 2009.29
Rarity: #45/354