Final answer:
Technetium (Tc) is a man-made element that is not found in nature. It was created by bombarding molybdenum with deuterons. Technetium is a radioactive metal used in medical procedures.
Step-by-step explanation:
The man-made element that is not found in nature is Technetium (Tc). It was created by bombarding molybdenum with deuterons by Emilio Segre and Carlo Perrier. Technetium is a radioactive metal that is used in various medical procedures, such as nuclear medicine imaging.