Iodine. Physical properties. Application of iodine

Сентябрь 9, 2022

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Iodine. Physical properties. Application of iodine

Содержание

2. Iodine Iodine is a chemical element with symbol I and atomic number 53. Simple substance iodine
3. Physical properties.
4. Isotopes Of the 37 known isotopes of iodine, only one, I- 127, is stable. The longest-lived
5. Iodine was discovered in 1811 Courtois in the ashes of seaweed, and from 1815 Gay-Lussac began
6. Very interesting version of the discovery of iodine - the culprit who was beloved cat Courtois:
7. Application of iodine. Iodine is widely used in various fields.
8. MEDICAL APPLICATIONS 5 - percent alcohol solution of iodine used to disinfect the skin around the
9. light Sources Iodine is used in light sources: Halogen lamps - as a component of the
10. Forensics. In forensics iodine vapor used for the detection of fingerprints on paper surfaces, such as
11. Manufacture of accumulators: Iodine is used as a component of the positive electrode in lithium-iodine batteries
12. Radio-electronic industry: In recent years there has been an increased demand for iodine by the manufacturers
13. Qualitative reaction with starch. + + =
14. THE WORLD PRODUCTION OF IODINE. Dynamics of consumption of iodine. World consumption of iodine in 2005
15. CROSSWORD PUZZLE WITH NUMBERS. 1 2 7 What is the molar mass of iodine? The radioactive
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Iodine
Iodine is a chemical element with symbol I and atomic number

53. Simple substance iodine under normal conditions - crystal black and gray with a purple metallic luster, readily forms a purple pairs, which have a pungent odor.

molecular form -

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Physical properties.

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Isotopes
Of the 37 known isotopes of iodine, only one, I- 127, is

stable.
The longest-lived radioisotope, I-129, has a half-life of 15.7 million years.
The next-longest-lived radioisotope, iodine-125, has a half-life of 59 days.
Iodine-123 (half-life 13 hours) is the isotope of choice for nuclear medicine imaging of the thyroid gland.
Iodine-131 (half-life 8 days) is a beta-emitting isotope, which is a common nuclear fission product.

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Iodine was discovered in 1811 Courtois in the ashes of seaweed,

and from 1815 Gay-Lussac began to consider it as a chemical element.

BERNARD COURTOIS

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Very interesting version of the discovery of iodine - the culprit

who was beloved cat Courtois: «I worked in the laboratory of the chemist was lying on the shoulder of a cat who, wanting to have fun, jump on the table and pushed to the floor standing nearby vessels, one of which was an alcoholic solution of seaweed ash and in the second - sulfuric acid. After mixing the liquid there was a cloud of blue-purple pair, which was nothing short of iodine.»

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Application of iodine.
Iodine is widely used in various fields.

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MEDICAL APPLICATIONS
5 - percent alcohol solution of iodine used to

disinfect the skin around the wound.
In radiographic and tomographic studies are widely used iodine-containing contrast agents.
Potassium iodide has been used as an expectorant, although this use is increasingly uncommon. In medicine, potassium iodide is usually used to treat acute thyrotoxicosis. It is also used to block uptake of iodine-131 in the thyroid gland.

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light Sources
Iodine is used in light sources:
Halogen lamps - as

a component of the gas filling the flask to precipitate the evaporated tungsten filament back at her.
Metal halide arc lamps - as a gas discharge temperature range of metal halides are used.

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