A) chlorine
B) NaCI
C) KI
D) iodine solution
Correct Answer: A
Solution :
Key Idea: The more electronegative halogen displaces less electronegative halogen from its salt. \[\because \,\,\,C{{l}_{2}}\] is more electronegative than \[B{{r}_{2}}\]. \[\therefore \,\,\,C{{l}_{2}}\] displaces bromine from KBr NaCI, \[{{I}_{2}}\] and KI cannot displace bromine from KBr.
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