| Property | Value |
|---|---|
| Atomic number | 53 |
| Atomic weight | 126.904473 amu |
| Element family | Non-metals |
| Electronic configuration | 1s2 |
| Stable and very long lived isotopes | 127I: 100% |
| Previous element | Tellurium |
| Next element | Xenon |
| Density | 4.93 g/cm3 (STP) |
| Melting | 113.5 °C |
| Boiling | 184.4 °C |
| Covalent radius | 1.33 Å |
| Van der Waals radius | 1.98 Å |
| Ionic radius | 2.2 Å |
| First ionization potential | 10.451 eV |
| Electron affinity | 3.059 eV |
| Electronegativity | 2.66 |
| Discovery year | 1811 |
Iodine is an element number 53 from non-metals family. Its symbol is I. Iodine atomic weight is 126.904473 amu. I stable and long lived isotopes are 127I: 100%. Iodine electronic configuration is 1s22s22p63s23p63d104s24p64d105s25p5. Sample compounds that contain Iodine are KI, I2, NaI, PbI2, HI, KIO3.
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