Atomic Radii
Atomic Radius
Bohr Radius
Covalent Radius
Van der Waals
| Iodine | |
| Electron Configuration | 2,8,18,18,7 |
| Electron Configuration | [Kr] 4d10 5s2 5p5 |
| Electronegativity | 2.66 |
| Enthalpy of Fusion | 15.27 kJ mol-1 |
| Enthalpy of Vaporisation | 41.67 kJ mol-1 |
| Heat Capacity | (I2) 54.44 J mol-1 K-1 |
| Thermal Conductivity | 0.449 W m-1 K-1 |
| Thermal Expansion | ? μm m-1 K-1 |
| Magnetic ordering | Non-magnetic |
| Electrical resistivity | 1.3 x 107 Ω m |
| Bulk modulus | 7.7 GPa |
| Atomic Radii |
|
| Atomic Radius
|
140 pm |
| Bohr Radius
|
115 pm |
| Covalent Radius
|
133 pm |
| Van der Waals
|
198 pm |
| Oxidation States |
|
| Main
|
I-1 |
| Other
|
I0, I+3, I+5, I+7 |
Ionisation Energies (kJ mol-1)  |
|
| M - M+ |
1008.4 |
| M+ - M2+ |
1845.9 |
| M2+ - M3+ |
3200 |
| M3+ - M4+ |
4100 |
| M4+ - M5+ |
5000 |
| M5+ - M6+ |
7400 |
| M6+ - M7+ |
8700 |
| M7+ - M8+ |
16400 |
| M8+ - M9+ |
19300 |
| M9+ - M10+ |
22100 |
| Covalent Bonds (kJ mol-1) |
|
| I-H
|
299 |
| I-C
|
228 |
| I-O
|
234 |
| I-F
|
280 |
| I-Cl
|
208 |
| I-I
|
151 |
| I-Si
|
234 |
| I-P
|
184 |