Halogens are a group of non-metallic elements in the periodic table that includes fluorine (F), chlorine (Cl), bromine (Br), iodine (I), and astatine (At). They are highly reactive due to their tendency to gain electrons to achieve a stable electron configuration. Halogens are often found in compounds with metals, forming salts. They have various applications, including disinfectants, pharmaceuticals, and industrial processes.
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