The Periodic Table presents the elements in order of increasing atomic number in

Question

The Periodic Table presents the elements in order of increasing atomic number in horizontal rows of such a length that those elements with similar properties fall directly beneath each other in vertical columns (groups or families). In other words, the properties of the elements recur periodically. The physical and chemical properties of same group elements vary consistently and gradually from one element of the group to the next member following their order in the Periodic Table. Examine the order of halogen oxidizing power you listed above: Does this correlate with their order in the Periodic Table? Do these results make 'sense'? Explain your responses based on your knowledge of the periodic table Based upon your results above, would you expect a reaction to occur between molecular bromine and fluoride ion? Explain. Explain how you could determine the identity of the halide ion present in an unknown salt by adding a few drops of ONLY ONE halogen solution (in cyclohexane) to a sample of the unknown salt dissolved in water. Describe the possible results and how you would use these data to unambiguously identify the halide ion present in the unknown compound.

Explanation / Answer

4) The halogen family contains the element F.Cl,Br and Iodine

The oxidizing power decreases down the group i.e. F > Cl > Br > I

The result make sense if we react

F2 + 2Cl- ------------ 2F- + Cl2

Since if we react flourine gas with chloride ion, then it will form Chlorine gas and 2 moles of flouride ion

No, there will be no reaction between Bromine and Flouride ion

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