Iodine is a chemical element. It is located in the seventh group of the periodic table. Its atomic number 53 is a non-metal element. It is represented by the symbol I (gray). It belongs to the halogen family. It is characterized by being able to obtain electrons from other materials and Combined with this, a compound is formed, and electrons are lost and rapidly oxidized.
It was discovered by French chemist Bernard Courtois, found in the ashes of burned algae, and described by scientist G. Lussac as a chemistry element.
It has sublimation properties: that is, its state is originally gaseous, and it can be converted into a solid-state without going through a liquid state.
Ability to get electrons from other materials.
It combines with materials to form compounds.
Quickly lose electrons.
Able to combine with other halogens; bromine, chlorine, and fluorine. Iodine melts at a temperature of 113.60 ° C.
Its boiling point reaches 185.24 degrees Celsius.
Acid purple vapor.
Interact with any air
The water is very salty, called brackish water, which is extracted from oil and gas.
Laterite, which contains calcium iodate.
Salty seawater is one of them.
Marine animals and plants have high levels of iodine.
How to detect iodine
It can be detected when a compound containing it is mixed with other substances, such as:
Sulfuric acid and iodine vapor began to peel off.
If it interacts with silver nitrate, the yellow precipitate is called silver iodide.
When it interacts with copper sulfate, it will become a brown precipitate.
When it interacts with mercury chloride, it is a red precipitate.
Turn the starch flakes blue. chemistry analysis
use
business use:
Silver iodide is used in photographic film, it is a photosensitive material.
Bakers use sodium iodate to improve the quality of flour-based bread.
Table salt; called iodized salt
Medical applications:
Its solution is used to purify and disinfect water.
Complex compounds used to make emergency wounds for iodide transporters.
Iodine compounds
Iodine tin: used to disinfect wounds and drinking water.
Silver iodide: For shooting.
Potassium iodide: Take pills to people in the affected areas to limit the body's ability to absorb radioactive iodine.
Tungsten: used to fix the filament in the bulb,
