Assign the oxidation for chlorine in each of the following anions?

Question

1. OCl^-

2. ClO2^-

3. ClO3^-

Answer 1

1. In OCl^-, the oxidation number for chlorine is +1.
2. In ClO2^-, the oxidation number for chlorine is +3.
3. In ClO3^-, the oxidation number for chlorine is +5.