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The review of Halogens and the Noble Gases topic | College Chemistry

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The elements fluorine (F), chlorine(Cl), bromine(Br), iodine(I) and astatine(At) are called halogens.These elements are called the halogens from Greek hals, “salt” and gentian, “to form or generate”, because they are literally the salt formers. The halogen elements form a group of very reactive nonmetals and are quite similar to each other in their chemical properties. ….  Read More