Neon vs Argon
| Property | Ne Neon | Ar Argon |
|---|---|---|
| Atomic number | 10 | 18 |
| Symbol | Ne | Ar |
| Name | Neon | Argon |
| Category | noble-gas | noble-gas |
| Standard Atomic Weight | 20.1797 u | 39.948 u |
| Period | 2 | 3 |
| Group | 18 | 18 |
| Block | p | p |
| Phase at STP | gas | gas |
| Electron configuration | [He]2s22p6 | [Ne]3s23p6 |
| Oxidation states | [0] | [0] |
| Electronegativity (Pauling) | N/A | N/A |
| Electron affinity | -1.2 eV | -1 eV |
| Density | 0.8999 kg/m³ | 1.7837 kg/m³ |
| Melting point | -248.59 °C | -189.35 °C |
| Boiling point | -246.05 °C | -185.85 °C |
| Discovery year | 1898 | 1894 |