Question

F2 is most reactive of all the four common halogens.

Answer 1

F2 is most reactive among the four common halogens because-

1. F-F bond has low enthalpy because the fluorine atom has a small size and due to their small size, there is repulsion between two atoms making its bond enthalpy lower, hence more reactivity is more.

2. It has a small size and high charge density due to which it is the most electronegative element.