SpaceXElementTcZ43

Technetium is a transition metal element with atomic number 43 and element symbol Tc. It is the lightest radioactive element. Traces of technetium occur naturally, but it was discovered through synthesis in a lab and was the first artificial element. You won’t encounter technetium in daily life, but the isotope technetium-99 is used in nuclear medicine. Here is a collection of technetium facts, including its discovery, sources, and uses.

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