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Explain reactivity of halogens with metals. |
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Answer» Solution :Halogens react with metals to FORM metal halides. For example, bromine reacts with MAGNESIUM to give magnesium bromide. `Mg(s) + Br_(2)(l) to MgBr_(2)(s)` Order of reactivity of Halogens: `F_(2) gt Cl_(2) gt Br_(2) gt I_(2)` The ionic character of the halides decreases in the order MF > MCI > MBr > MI where M is a monovalent metal. For example: `OVERSET(NaF gt NaCl gt NaBr gt Nal)underset("Ionic character decreases")to` If a metal exhibits more than one oxidation state, the halides in HIGHER oxidation state will be more covalent than the one in lower oxidation state. For example: `SnCl_4, PbCl_4, SbCl_5` and `UF_6` are more covalent than `SnCl_2, PbCl_2, SbCl_3` and `UF_4` respectively. |
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