| Content-Type | image/png |
|---|---|
| Content-Length | 4.26 kB |
| Size | 512x512 |
#1 Hydrogen - rarity ZERO-KELVIN
| 1st ionization energy | 13.598 eV | 0.85% |
|---|---|---|
| appearance | Colorless gas | 7.63% |
| atomic mass | 1.008 u | 0.85% |
| atomic number | 1 | 0.85% |
| atomic radius | 120 picometers (van der Waals radius) | 0.85% |
| boiling point | 20.271 K or -252.87 °C or -423.18 °F | 0.85% |
| cas number | 1333-74-0 | 0.85% |
| cas number of (cl2) | - | 99.15% |
| category | Other Nonmetals | 0.85% |
| crystal structure | HEX (Hexagonal) | 3.39% |
| density | 0.0898 g/L | 0.85% |
| electronegativity | 2.2 (Pauling scale) | 5.08% |
| electronic configuration | 1s1 | 0.85% |
| electrons | 1 | 0.85% |
| electrons arrangement | 1 | 0.85% |
| main isotopes | 1H, 2H | 0.85% |
| melting point | 13.99 K or -259.16 °C or -434.49 °F | 0.85% |
| neutrons | 0 | 0.85% |
| position | Group: 1, Period: 1, Block: s | 0.85% |
| rarity | ZERO-KELVIN | 33.33% |
| state | Gas | 9.32% |
| sublimation point | - | 99.15% |
| symbol | H | 0.85% |
| valence electrons | 1 | 5.93% |
| who discovered | Henry Cavendish(In year 1766) | 0.85% |
Total Rarity Score: 2100.88
Rarity: #21/354