Which of these components must be present in a redox reaction?

Question

Quizplus · Accepted Answer

A redox reaction involves the transfer of electrons from one species to another. This transfer results in a change in the oxidation states of the reactants. In other words, one species undergoes oxidation (loses electrons, increase in oxidation state) while the other undergoes reduction (gains electrons, decrease in oxidation state). Therefore, a redox reaction must have at least one atom whose oxidation number increases (Choice B) and one whose oxidation number decreases (Choice C).

Which of These Components Must Be Present in a Redox