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Chemistry


Technetium

Name: Technetium
Symbol: To
Number of Energy Levels: 5
Electrons on the outer energy level: 1
Atomic number: 43
Atomic Mass: 98 Amu (Atomic Mass Units)
Protons/Electrons: 43
Neutrons: 55
Density: 11.5 g/cm3
Classification: Transition Metal

Technetium | Chemical elements

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

  1. Technetium is produced synthetically, it is man-made.
  2. Very small amounts of technetium exist in nature as a fission product in uranium ores.
  3. Technetium doesn’t have any stable isotopes.
  4. Technetium is a silvery-gray metal.
  5. Technetium is a radioactive metal, byproduct of uranium fission.
  6. 99-Tc is used in nuclear medicine for different diagnostic tests.
  7. Technetium with atomic number 43 is the lowest-numbered element in the periodic table that is exclusively radioactive.
  8. 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).
  9. Almost all technetium is produced by the nuclear fission of uranium-235 and plutonium-239.
  10. Two thirds of the world’s supply of technetium comes from the National Research Universal Reactor (Ontario, Canada) and High Flux Reactor (Petten, Netherlands).
  11. Technetium-99 is a major concern for long-term disposal of radioactive waste.
  12. Technetium might be use in the future in nano-scale nuclear batteries.
  13. Technetium has no biological role and it is not found in human body.
  14. All isotopes of technetium must by handled carefully.

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