Iodine

What is Iodine? Definitions, and Examples

GET TUTORING NEAR ME!

(800) 434-2582

By submitting the following form, you agree to Club Z!'s Terms of Use and Privacy Policy

    Iodine is a chemical element that is represented by the symbol I and has an atomic number of 53. It is a member of the halogen group of elements and is located in the periodic table in the 17th group and the 5th period.

    Iodine is a solid at room temperature and has a violet-black color. It has a melting point of 113.7 degrees Celsius and a boiling point of 184.3 degrees Celsius. Iodine is a very reactive element and readily forms compounds with other elements.

    One of the most important compounds of iodine is iodine monochloride (ICl), which is used as a disinfectant and a reagent in organic synthesis. Iodine also forms compounds with oxygen and hydrogen, known as iodine oxides and iodine hydrides, respectively.

    Iodine is an essential trace element for the human body, as it is required for the production of thyroid hormones. The thyroid gland uses iodine to produce the hormones triiodothyronine (T3) and thyroxine (T4), which regulate the body’s metabolism and play a role in the development and function of the brain and nervous system.

    Deficiency of iodine in the diet can lead to a condition known as hypothyroidism, which can cause symptoms such as fatigue, weight gain, and depression. On the other hand, excessive intake of iodine can lead to hyperthyroidism, which can cause symptoms such as rapid heartbeat, weight loss, and nervousness.

    Iodine is not found in its elemental form in nature and must be obtained from dietary sources or supplements. Foods that are rich in iodine include seafood, dairy products, and eggs. Iodized salt is also a good source of iodine, as it is fortified with the element to prevent deficiencies.

    In addition to its role in the human body, iodine is also used in a variety of industrial and commercial applications. It is used as a disinfectant and a sanitizer, as well as in the production of dyes, pigments, and pharmaceuticals. Iodine is also used in the purification of water and in the production of animal feed.

    Despite its many uses, iodine is a relatively rare element in the Earth’s crust. It is primarily found in the form of iodides, such as potassium iodide (KI) and sodium iodide (NaI), in mineral deposits and seawater. The largest producers of iodine are Chile, Japan, and the United States.

    Quiz:

    1. What is the symbol for iodine on the periodic table?
    2. What is the atomic number of iodine?
    3. What is the color of iodine?
    4. What is iodine monochloride used for?
    5. What are the two thyroid hormones that are produced by the thyroid gland using iodine?
    Find the right fit or it’s free.

    We guarantee you’ll find the right tutor, or we’ll cover the first hour of your lesson.