Zusammenfassung der Ressource
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Halogens are found in Group 16, Periods 2-4 of the Periodic Table.
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Chlorine, Sodium, Iodine and Fluorine are all halogen elements.
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Halogens are non-metallic, non-ductile, non-malleable and can be distinguished by their colors.
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Halogens consist of 7 electrons in the outer shell.
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There are 2 electrons taken in bonding.
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A "salt" is when a halogen gains a neutron from a metal.
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In the gaseous state, halogens form reactive, diatomic, covalent molecules.
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Chlorine is used to purify drinking water.
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An example of "sublimation" is dry ice.