A) \[C{{l}_{2}}\]and \[B{{r}_{2}}\] are evolved
B) \[C{{l}_{2}}\] is evolved
C) \[C{{l}_{2}},\,\,B{{r}_{2}}\]and \[{{F}_{2}}\] are evolved
D) none of the above
Correct Answer: D
Solution :
Upper halogen can replace lower halogen from their compounds solution because a more electronegative halogen displaces less electronegative halogen from its halide.
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