alleryWhich is the least reactive element belonging to group 17?
ABromine
BChlorine
CIodine
DFluorine
Answer & Solution
Correct answer: C. Iodine
1. In group 17, reactivity decreases down the group.
2. Fluorine is most reactive at the top; iodine is at the bottom.
3. So iodine is the least reactive halogen of those listed.
_Source: RRB Group D CEN-02/2018 PYQ, Q.83._
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