Question

F2 is more reactive than ClF3 but ClF3 is more reactive than Chlorine

Answer 1

Interhalogen compounds are more reactive than halogens because the A-X bond in interhalogens is weaker than X-X bond in halogens. But in case of Flourine, the F-F bond is weaker. This is because of the small size of fluorine atoms, the F-F bond distance is very small due to which there is appreciable inter-electronic repulsion.This repulsion weakens the bond between two fluorine atoms. Hence, F₂ is more reactive than ClF₃ but ClF₃ is more reactive than Chlorine