Q. The correct order of increasing oxidising power is
A) $F_{2} < Cl_{2} < I_{2} > {Br}_{2}$
B) $F_{2} < {Br}_{2} < Cl_{2} < I_{2}$
C) $Cl_{2} < {Br}_{2} < F_{2} < I_{2}$
D) $I_{2} < {Br}_{2} < Cl_{2} < F_{2}$
Explanation
(d)
Halogens are strong oxidising agents. The oxidising power halogen decreases from fluorine to iodine, because their reduction potential decreases from fluorine to iodine. The increasing order of their oxidising power is as
Element $I_{2}\ \ \ < \ \ {Br}_{2}\ \ \ < \ \ \ \ Cl_{2}\ \ < \ \ \ F_{2}$
Reduction
potential +0.54 +1.06 +1.36 +2.87
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.