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This Visual Summary presents the keywords and the summaries of the Wikipedia article about "Chlorine". The Visual Summary map and the Keyword Cloud were automatically created by WikiSummarizer.
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Wikipedia article: Chlorine
· It has the highest electron affinity and the third highest electronegativity of all the elements; for this reason, chlorine is a strong oxidizing agent.
· The most common compound of chlorine, sodium chloride, has been known since ancient times; however, around 1630, chlorine gas was obtained by the Belgian chemist and physician Jan Baptist van Helmont.
· The synthesis and characterization of elemental chlorine occurred in 1774 by Swedish chemist Carl Wilhelm Scheele, who called it "dephlogisticated muriatic acid air," having thought he synthesized the oxide obtained from the hydrochloric acid.
· The great oxidizing potential of chlorine led it to its bleaching and disinfectant uses, as well as uses of an essential reagent in the chemical industry.
· As a common disinfectant, chlorine compounds are used in swimming pools to keep them clean and sanitary.
· Solutions of chlorine in water contain chlorine (Cl2), hydrochloric acid, and hypochlorous acid: This conversion to the right is called disproportionation, because the ingredient chlorine both increases and decreases in formal oxidation state.
· Like the other halogens, chlorine participates in free-radical substitution reactions with hydrogen-containing organic compounds.
· In the Earth's crust, chlorine is present at average concentrations of about 126 parts per million, predominantly in such minerals as halite (sodium chloride), sylvite (potassium chloride), and carnallite (potassium magnesium chloride hexahydrate).
· Principal applications of chlorine are in the production of a wide range of industrial and consumer products.
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