A) Fluorine
B) Chlorine
C) Bromine
D) Iodine
Correct Answer: A
Solution :
[a] Fluorine is the most reactive among all halogens. However the reactivity deceases from \[{{F}_{2}}\] to \[{{I}_{2}}\] (from top to bottom of group) may be attributed to (1) Low dissociation enthalpies (2) High electron affinities
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