Ncert Exercises & Solutions

Arrange the halogens

F_{2}, {Cl}_{2}, {Br}_{2}, I_{2}

, in order of their increasing reactivity with alkanes:
1.

I_{2} < {Br}_{2} < {Cl}_{2} < F_{2}

{Br}_{2} < {Cl}_{2} < F_{2} < I_{2}

F_{2} < {Cl}_{2} < {Br}_{2} < I_{2}

{Br}_{2} < I_{2} < {Cl}_{2} < F_{2}