Introduction to the Halogen Family
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Group 17 of the periodic table contains the elements fluorine, chlorine, bromine, iodine and astatine. These elements are collectively known as the HALOGENS. This name is derived from two Greek words Halo and Gens meaning 'salt producing'. Halogens are among the most reactive non-metals. There are greater similarities within the halogen group compared to other groups in the periodic table with the exception of the alkali metals (group I). Astatine is radioactive and is therefore not of any practical importance. All halogens precede the noble gases in the periodic table because their atoms contain one electron less than the electronic configuration of the inert gas. They have very strong tendency to acquire stable inert gas configuration by accepting one electron. For this reason halogens exhibit non-metallic behavior.
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