Iodine crystals 500g
The laboratory grade is used for research analytical purposes
Iodine is also used in medical treatment as tincture and iodioform, it is employed in the preparation of certain drugs and in the manufacture of some printing inks and dyes.
Silver iodine is used in photography. Iodine is added to almost all the table salt and is used as a supplement to animal feed.
It is also an ingredient of water purification tablets that are used for drinking water preparation.
For many of these uses iodine is turned into iodides.
| Atomic number | 53 |
| Atomic mass | 126.9045 g.mol -1 |
| Electronegativity according to Pauling | 2.5 |
| Density | 4.93 g.cm-3 at 20°C |
| Melting point | 114 °C |
| Boiling point | 184 °C |
| Vanderwaals radius | 0.177 nm |
| Ionic radius | 0.216 nm (-1) ; 0.05 nm (+7) |
| Isotopes | 15 |
| Electronic shell | [ Kr ] 4d10 5s25p5 |
| Energy of first ionisation | 1008.7 kJ.mol -1 |
| Standard potential | + 0.58 V ( I2/ I– ) |
| Discovered | Bernard Courtois in 1811 |
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