Which of the following apply to positive ions?

• A. Attracted to the anode
• B. Produced by ionization of acids
• C. Attracted to the cathode
• D. Produces no ionization

Answer: (C)

Positive ions (cations) migrate in an electric field toward the cathode, the negatively charged electrode, where they gain electrons and are reduced. That’s why the statement about being attracted to the cathode is the correct one—the cathode draws these positive charges because opposite charges attract. In contrast, attracting to the anode would describe negative ions (anions), not positive ones. Saying positive ions are produced by ionization of acids is too specific and not universally true for all positive ions. And positive ions exist precisely because ionization (loss of electrons) has occurred, so they do produce ionization rather than none.