Question

which radioisotope is used as a tracer in nuclear scanning?
○ carbon -14
○ uranium-238
○ technetium-99m
○ iodine-129

Explanation:

Carbon - 14 is mainly used for radiocarbon dating. Uranium - 238 is involved in nuclear fission and geological dating. Iodine - 129 is not a common tracer for nuclear scanning. Technetium - 99m is widely used as a tracer in nuclear scanning (nuclear medicine) because it has suitable properties like a short half - life and emits gamma rays that can be detected for imaging.

Answer:

C. technetium - 99m