Hydrogen vs Neon
| Property | H Hydrogen | Ne Neon |
|---|---|---|
| Atomic number | 1 | 10 |
| Symbol | H | Ne |
| Name | Hydrogen | Neon |
| Category | nonmetal | noble-gas |
| Standard Atomic Weight | 1.007975 u | 20.1797 u |
| Period | 1 | 2 |
| Group | 1 | 18 |
| Block | s | p |
| Phase at STP | gas | gas |
| Electron configuration | 1s1 | [He]2s22p6 |
| Oxidation states | [-1, 1] | [0] |
| Electronegativity (Pauling) | 2.2 | N/A |
| Electron affinity | 0.75419 eV | -1.2 eV |
| Density | 0.08988 kg/m³ | 0.8999 kg/m³ |
| Melting point | -259.34 °C | -248.59 °C |
| Boiling point | -252.87 °C | -246.05 °C |
| Discovery year | 1766 | 1898 |