I
Iodine
Element 53 · Halogen · Period 5, Group 17
Solid · Discovered 1811
Atomic Properties
| Atomic Number | 53 |
| Atomic Mass | 126.9045u |
| Electron Configuration | [Kr]5s2 4d10 5p5 |
| Electronegativity | 2.66Pauling |
| Atomic Radius | 198pm |
| Ionization Energy | 10.451eV |
| Electron Affinity | 3.059eV |
| Oxidation States | +7, +5, +1, -1 |
Physical Properties
| Standard State | Solid |
| Melting Point | 386.85K |
| Boiling Point | 457.55K |
| Density | 4.93g/cm³ |
| Group Block | Halogen |
| Year Discovered | 1811 |