Hydrogen vs Fluorine
| Property | H Hydrogen | F Fluorine |
|---|---|---|
| Atomic number | 1 | 9 |
| Symbol | H | F |
| Name | Hydrogen | Fluorine |
| Category | nonmetal | halogen |
| Standard Atomic Weight | 1.007975 u | 18.998403 u |
| Period | 1 | 2 |
| Group | 1 | 17 |
| Block | s | p |
| Phase at STP | gas | gas |
| Electron configuration | 1s1 | [He]2s22p5 |
| Oxidation states | [-1, 1] | -1 |
| Electronegativity (Pauling) | 2.2 | 3.98 |
| Electron affinity | 0.75419 eV | 3.4011 eV |
| Density | 0.08988 kg/m³ | 1.696 kg/m³ |
| Melting point | -259.34 °C | -219.62 °C |
| Boiling point | -252.87 °C | -188.12 °C |
| Discovery year | 1766 | 1886 |