How can one determine the best oxidizing agent?

The best oxidizing agent can be determined by looking at its ability to gain electrons and cause other substances to lose electrons in a chemical reaction. A stronger oxidizing agent will be able to more easily accept electrons and cause oxidation in other substances. This can be measured by looking at the standard reduction potential values of different oxidizing agents. The oxidizing agent with the highest standard reduction potential value is considered the strongest and best oxidizing agent.