All of the isotopes of technietium are relatively unstable. This is the only element which exhibits this propoerty of all of the elements in the lower Periodic Table
The hyphen notation of the most common isotope of technetium, technetium-98, is 98Tc.
Some common nicknames for technetium are "Tc" and "Tech."
Some common compounds of technetium include technetium-99m, which is used in medical imaging (as sodium pertechnetate and technetium-99m radiopharmaceuticals), as well as various technetium oxides and halides.
Both are metals.
Technetium oxidation states are between -1 and +7; the most common are 4,5 and 7.
Technetium primarily forms compounds in the +4, +5, +6, and +7 oxidation states. The most common oxidation states for technetium are +4 and +7.
Technetium can form numerous compounds due to its variable oxidation states. Some common compounds include technetium dioxide (TcO2), technetium trichloride (TcCl3), and technetium tetrafluoride (TcF4).
Transition metals. in fact, it is the Only radioactive transition metal!
Technetium oxidation states are between -1 and +7; the most usual valences are +3, +4 and +7.
Technetium is not commonly found in household items as it is a rare and radioactive element. Its most common application is in nuclear medicine for diagnostic imaging.
In the Greek language the meaning of technetos is artificial.
Technetium primarily emits gamma radiation, which is a type of electromagnetic radiation with high energy and penetrating power. Additionally, technetium-99m, a common radioisotope of technetium used in medical imaging, emits low-energy gamma radiation suitable for imaging purposes.