Determine the oxidation state of Cl in ClO₃^-. A) +1 B) +3 C) +5 D) +7 E) 0

Question

Quizplus · Accepted Answer

In this compound, the overall charge is 0. 
Sulfur has an oxidation state of +6 because it is bonded to 4 oxygen atoms which have an oxidation state of -2. 
Each of the phosphorus atoms connected to the sulfur is in the +5 oxidation state. Since the overall charge is 0, the sum of the oxidation states of all of the atoms must be 0. 
Therefore, the Cl atom must have an oxidation state of +5 to balance out the overall charge.

Determine the Oxidation State of Cl in ClO3-

Determine the Oxidation State of Cl in ClO₃^-