A) fluorine
B) iodine
C) chlorine
D) bromine
Correct Answer: B
Solution :
On moving down a group basic nature increases. So, \[{{I}_{2}}\] is a most basic element in VII A group. So basic nature of halogen in sequence of decreasing order. \[{{F}_{2}}<C{{l}_{2}}<B{{r}_{2}}<{{I}_{2}}\]
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