HALOGEN Meaning and
Definition
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Halogen, in chemistry, refers to any of a group of five chemical elements known as fluorine (F), chlorine (Cl), bromine (Br), iodine (I), and astatine (At), which belong to Group 17 (Group VIIA) of the periodic table. The term "halogen" is derived from the Greek words "halos" meaning "salt" and "genes" meaning "forming." Halogens are highly reactive nonmetallic elements that have seven valence electrons in their outermost energy level, resulting in their ability to easily gain or share an electron to complete a stable octet configuration.
These elements are known for their characteristic properties, including their ability to form halide salts when combined with metals, ranging from sodium chloride (table salt) to silver iodide. They exhibit varying physical states at room temperature, from the gas phase (fluorine and chlorine) to liquid (bromine) and solid (iodine and astatine). Halogens are also known for their strong oxidizing abilities, toxicity, and distinct colors, such as the yellow-green hue of chlorine gas and the reddish-brown color of bromine liquid.
Moreover, halogens find several applications in industry and daily life. For example, chlorine is used in water treatment to disinfect and kill bacteria, while fluorine is crucial in the production of refrigerants and non-stick coatings. Additionally, halogens are widely employed in organic chemistry as reactants or catalysts for various synthesis reactions. Due to their reactivity and importance in various chemical processes, halogens occupy a vital place in the field of chemistry and have numerous industrial, commercial, and biological applications.
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One of the chlorine group (bromine, chlorine, fluorine, iodine) of metalloids, all univalent elements; they form monobasic acids with hydrogen, and their hydroxides (fluorine forms none) are also monobasic acids.
A practical medical dictionary. By Stedman, Thomas Lathrop. Published 1920.
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Etymology of HALOGEN
The word "halogen" has its roots in Greek. It is derived from the combination of two Greek words: "halos", meaning "salt", and "genes", meaning "forming" or "producing". Thus, "halogen" can be translated as "salt-producing" or "salt-forming". This name is fitting for the group of elements known as halogens because they have a tendency to form salts when they react with metals.
Similar spelling words for HALOGEN
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