Provide a single claim statement for the following question. Note that you must

Question

Provide a single claim statement for the following question. Note that you must clearly state the trend (e.g., reactivity increases, decreases, remains the same down a group). What is the correlation, if any, between the reactivity of the halogen atoms and their positions in the periodic table? If there is a correlation, you must describe the pattern. (To get started, consider if a reaction would occur between F2 and Br-; between At2 and Br-). Support your claim by providing evidence! Please make sure to answer the correlation between the reactivity of the halogen atoms and their positions in the periodic table.

Explanation / Answer

The reactivities of the halogens decrease down the group ( At < I < Br < Cl < F). This is due to the fact that atomic radius increases in size with an increase of electronic energy levels. This lessens the attraction for valence electrons of other atoms, decreasing reactivity. This decrease also occurs because electronegativity decreases down a group; therefore, there is less electron "pulling." In addition, there is a decrease in oxidizing ability down the group.

F2 is the strongest oxidising halogen and it oxidises other halide ions in solution and even in solid phase.

F2 + 2Br------------->2F- + Br2

At2 and Br- is unable react,because Br is mor electronegetive then At.

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