F
Fluorine
Element 9 · Halogen · Period 2, Group 17
Gas · Discovered 1670
Atomic Properties
| Atomic Number | 9 |
| Atomic Mass | 18.99840316u |
| Electron Configuration | [He]2s2 2p5 |
| Electronegativity | 3.98Pauling |
| Atomic Radius | 135pm |
| Ionization Energy | 17.423eV |
| Electron Affinity | 3.339eV |
| Oxidation States | -1 |
Physical Properties
| Standard State | Gas |
| Melting Point | 53.53K |
| Boiling Point | 85.03K |
| Density | 0.001696g/cm³ |
| Group Block | Halogen |
| Year Discovered | 1670 |