Number of Energy Levels: 5
Electrons on the outer energy level: 1
Atomic number: 43
Atomic Mass: 98 Amu (Atomic Mass Units)
Density: 11.5 g/cm3
Classification: Transition Metal
Technetium was discovered in 1937 by Carlo Perrier. Technetium’s name derives from the Greek word "technetos" which means "artificial". Technetium’s melting point is at 2200.0 °C (2473.15 K, 3992.0 °F) and its boiling point is at 2200.0 °C (2473.15 K, 3992.0 °F).
Top 14 interesting facts about Technetium
Technetium is produced synthetically, it is man-made.
Very small amounts of technetium exist in nature as a fission product in uranium ores.
Technetium doesn’t have any stable isotopes.
Technetium is a silvery-gray metal.
Technetium is a radioactive metal, byproduct of uranium fission.
99-Tc is used in nuclear medicine for different diagnostic tests.
Technetium with atomic number 43 is the lowest-numbered element in the periodic table that is exclusively radioactive.
The most stable radioactive isotopes of technetium are: 98-Tc (4.2 million years), 97-Tc (2.6 million years), and 99-Tc (211.000 million years).
Almost all technetium is produced by the nuclear fission of uranium-235 and plutonium-239.
Two thirds of the world’s supply of technetium comes from the National Research Universal Reactor (Ontario, Canada) and High Flux Reactor (Petten, Netherlands).
Technetium-99 is a major concern for long-term disposal of radioactive waste.
Technetium might be use in the future in nano-scale nuclear batteries.
Technetium has no biological role and it is not found in human body.
All isotopes of technetium must by handled carefully.