Neon vs Krypton
| Property | Ne Neon | Kr Krypton |
|---|---|---|
| Atomic number | 10 | 36 |
| Symbol | Ne | Kr |
| Name | Neon | Krypton |
| Category | noble-gas | noble-gas |
| Standard Atomic Weight | 20.1797 u | 83.798 u |
| Period | 2 | 4 |
| Group | 18 | 18 |
| Block | p | p |
| Phase at STP | gas | gas |
| Electron configuration | [He]2s22p6 | [Ar]4s23d104p6 |
| Oxidation states | [0] | [0, 1, 2] |
| Electronegativity (Pauling) | N/A | 3 |
| Electron affinity | -1.2 eV | -1 eV |
| Density | 0.8999 kg/m³ | 3.733 kg/m³ |
| Melting point | -248.59 °C | -157.36 °C |
| Boiling point | -246.05 °C | -153.42 °C |
| Discovery year | 1898 | 1898 |