Chlorine, bromine and iodine are in group ____ of the periodic table. The order of ____ of these three elements can be shown by carrying out ____ experiments. You are provided with potassium ____ solution potassium chloride solution potassium iodide solution ____ solution chlorine solution and iodine solution Describe how these solutions could be used to carry out experiments to show the ____ of reactivity of bromine, chlorine and iodine, explaining how the ____ would show the order of reactivity.

Halogen reactivity

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