Some of the classic uses of halogens are as follows: Iodine is used as an antiseptic, chlorine is a disinfectant, fluorine is used in toothpaste in the form of sodium fluoride as it prevents tooth decays.įluorine, Chlorine, Bromine, Iodine, Astatine, and Tennessine constitute group \( + 5\) and \( + 7\) oxidation states in their compounds. We will study the importance of group 17 elements, their properties, and their uses in this article. The group 17 elements are called halogens. He isolated the element by adding sulfuric acid to seaweed ashes. The group 17 elements consist of Fluorine, Chlorine, Bromine, Iodine, Astatine, and Tennessine. Discovered: Iodine was discovered by Bernard Courtois in 1811. In the periodic table, the Group 17 elements exist as the second column from the right side. Because of this, they are more reactive than other non-metal groups. Because halogen elements have seven valence electrons, forming a complete octet requires only one extra electron. Despite the fact that astatine is radioactive and has only short-lived isotopes, it behaves similarly to iodine and is frequently classified as a halogen. Fluorine (F), chlorine (Cl), bromine (Br), iodine (I), and astatine (A) are the five poisonous non-metallic elements that make up Group 17 of the periodic table (At). Like the other halogens, it is one electron short of a full octet and is hence a strong oxidizing agent, but iodine is the weakest of the halogen family.Group 17 Elements: On the periodic table, the halogens are to the left of the noble gases. Most common use: - iodide, and thyroxin which contains iodine, are used. Potassium iodide (KI) is used to make photographic film and, when mixed with iodine in alcohol, as an antiseptic for external wounds. Erythrosine, an organo-iodine compound is important food coloring agent. Atomic Number 53, Atomic Mass 126.9, 53 protons, 53 electrons, 64 neutrons. It dissolves readily in chloroform, carbon tetrachloride. Iodine exhibits some metallic-like properties. Iodine has antiviral and antimicrobial action. /rebates/&252findustrial-uses. Iodine is a bluish-black, lustrous solid, volatizing at ordinary temperatures into a blue-violet gas with an irritating odor it forms compounds with many elements, but is less active than the other halogens, which displace it from iodides. Iodine is also used to make polarising filters for LCD displays. Iodide salts are used in pharmaceuticals and disinfectants, printing inks and dyes, catalysts, animal feed supplements and photographic chemicals. Iodine is used in iodoform test to detect the presence of methyl ketones. What are the main uses of iodine - Reimagining Education What are the main uses of iodine Today, iodine has many commercial uses. Iodine is widely used in laboratories to test the presence of starch in solution. ![]() It is the heaviest member of its group that remains stable over time. Iodine is used as catalyst in the preparation of acetic acid. Iodine is a member of group 17 (halogens) in the periodic table and is the fourth such element, below fluorine, chlorine and bromine. ![]() Iodine compounds are important in organic chemistry and very useful in medicine. The most common compounds are the iodides of sodium and potassium (KI) and the iodates (KIO 3). ![]() Potassium iodide (KI) is found in photographic film. The artificial radioisotope 131 I, with a half-life of 8 days, has been used in treating the thyroid gland. Iodine has a melting point of 113.5☌, a boiling point of 184.35☌, a specific gravity of 4.93 for its solid state at 20☌, a gas density of 11. ![]() Iodine is used as a catalyst in the production of acetic acid and some polymers. Iodine is also present in many pharmaceuticals and antimicrobial. Other chemical uses for iodine are as an antiseptic for external wounds when mixed with alcohol and as a radioisotope (Iodine-131) for the treatment of thyroid cancer. Iodine readily absorbs x-rays and is used as a contrasting agent in medical x-ray imaging. Today, iodine is chiefly obtained from deposits of sodium iodate (NaIO 3) and sodium periodate (NaIO 4) in Chile, Bolivia and Japan. 2) at standard temperature and pressure that sublimes readily to form a violet gas. Iodine exists as a lustrous, purple-black nonmetallic solid (Fig. The gas condensed on metal objects in the room, creating solid iodine. During the addition of sulfuric acid (H 2SO 4) to further process the ash, he accidentally added too much and a violet-colored cloud (Fig.
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