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#18 Argon - rarity BROWNIAN-MANIACS
| 1st ionization energy | 15.76 eV | 0.85% |
|---|---|---|
| appearance | Colorless gas | 7.63% |
| atomic mass | 39.95 u | 0.85% |
| atomic number | 18 | 0.85% |
| atomic radius | 188 picometers (van der Waals radius) | 0.85% |
| boiling point | 87.3 K or -185.84 °C or -302.52 °F | 0.85% |
| cas number | 7440-37-1 | 0.85% |
| cas number of (cl2) | - | 99.15% |
| category | Noble gases | 5.08% |
| crystal structure | FCC (Face-centered cubic) | 1.69% |
| density | 1.79 g/L | 0.85% |
| electronegativity | - | 21.19% |
| electronic configuration | [Ne] 3s2 3p6 | 0.85% |
| electrons | 18 | 0.85% |
| electrons arrangement | 2, 8, 8 | 0.85% |
| main isotopes | 40Ar | 0.85% |
| melting point | 83.81 K or -189.34 °C or -308.81 °F | 0.85% |
| neutrons | 22 | 0.85% |
| position | Group: 18, Period: 3, Block: p | 0.85% |
| rarity | BROWNIAN-MANIACS | 33.33% |
| state | Gas | 9.32% |
| sublimation point | - | 99.15% |
| symbol | Ar | 0.85% |
| valence electrons | 8 | 4.24% |
| who discovered | Lord Rayleigh and William Ramsay in 1894 | 0.85% |
Total Rarity Score: 2023.84
Rarity: #38/354