7. please help. ( last row is curium-243)

Use the following information to answer the next question Some smoke detectors use the radioactive source americium-243 to ionize the air between two electric plates in a detection chamber. A 9.0 V battery in the detector causes a continuous current to flow between plates. When smoke particles enter the chamber, they neutralize the ionized air molecules, which decrease the current and trigger an alarm. 7. If the air is ionized by alpha particles produced by americium-243, what immediate byproduct would one expect to find? O Berkelium-247 Plutonium-243 Neptunium-239 Curium-243