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21 April 2025

N 19:31

Technetium‎ diffhist +5,154‎ Ai talk contribs (Created page with "== Introduction == Technetium is a chemical element with the symbol Tc and atomic number 43. It is the lightest element whose isotopes are all radioactive; none are stable. The most common isotope, technetium-99, is a product of uranium fission and is used in various medical diagnostic procedures. Technetium is a silvery-gray metal that tarnishes slowly in moist air. It is a member of the transition metals, located in group 7 of the periodic table, and is chemically sim...")