What is technetium?

  • (noun): A crystalline metallic element not found in nature; occurs as one of the fission products of uranium.
    Synonyms: Tc, atomic number 43


Technetium is the chemical element with atomic number 43 and symbol Tc. It is the lowest atomic number element without any stable isotopes; every form of it is radioactive. Nearly all technetium is produced synthetically and only minute amounts are found in nature. Naturally occurring technetium occurs as a spontaneous fission product in uranium ore or by neutron capture in molybdenum ores. The chemical properties of this silvery gray, crystalline transition metal are intermediate between rhenium and manganese.

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Some articles on technetium:

Technetium-99 - In The Environment
... The long half-life of technetium-99 and its ability to form an anionic species makes it (along with 129I) a major concern when considering long-term ... For this reason, the environmental chemistry of technetium is an active area of research ... Lab results using the NDTB-1 crystals removed approximately 96 percent of technetium-99 ...
Technetium (99m Tc) Votumumab
... Technetium (99mTc) votumumab (trade name HumaSPECT) is a human monoclonal antibody labelled with the radionuclide technetium-99m ...
Technetium - Precautions
... Technetium plays no natural biological role and is not normally found in the human body ... Technetium is produced in quantity by nuclear fission, and spreads more readily than many radionuclides ... and food consumption could be detected for rats which ingested up to 15 µg of technetium-99 per gram of food for several weeks ...
Technetium Star
... A technetium star, or more properly a Tc-rich star, is a star whose stellar spectrum contains absorption lines of the light radioactive metal technetium ... The most stable isotope of technetium is 98Tc with a half-life of 4.2 million years, which is too short a time to allow the metal to be material from before the star's creation ... Therefore, the detection in 1952 of technetium in stellar spectra provided unambiguous proof of nucleosynthesis in stars, one of the more extreme cases being R Geminorum ...
ATC Code V09 - V09H Inflammation and Infection Detection - V09HA Technetium (99mTc) Compounds
... V09HA01 Technetium (99mTc) human immunoglobulin V09HA02 Technetium (99mTc) exametazime labelled cells V09HA03 Technetium (99mTc) antigranulocyte antibody V09HA04 Technetium (99mTc) sulesomab ...