Question

Rank the nonmetals in each set from most reactive (1) to least reactive (3).

Bromine:

Chlorine:

Iodine:

Answer 1

The reactivity of halogens decreases as you move down the group in the periodic table. Therefore, for the nonmetals you provided, the ranking from most reactive to least reactive is:

1. Chlorine (most reactive)
2. Bromine
3. Iodine (least reactive)