Neon vs Argon
Pick up to 3 elements and see how they stack up.
| Property | Neon | Argon |
|---|---|---|
| Atomic number | 10 | 18 |
| Atomic mass | 20.18 | 39.948 |
| Electronegativity | — | — |
| Melting point | 24.56 K (-248.6 °C) | 83.81 K (-189.3 °C) |
| Boiling point | 27.07 K (-246.1 °C) | 87.3 K (-185.8 °C) |
| Density | 0.9 g/L | 1.784 g/L |
| Atomic radius | 154 pm | 188 pm |
| Ionization energy | 21.565 eV | 15.76 eV |
| Discovered | 1898 | 1894 |
| Category | Noble gas | Noble gas |
| State at room temp. | Gas | Gas |
| Block | p | p |
| Group | 18 | 18 |
| Period | 2 | 3 |
| Valence electrons | 8 | 8 |
| Common charges | 0 | 0 |
| Electron configuration | [He] 2s2 2p6 | [Ne] 3s2 3p6 |