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The half life of technetium-99 is 2,111.10e+5 years.
Avoid a confusion between Tc-99 and Tc-99m.

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What is the difference between technetium-99m and technetium-99?

Technetium-99m is a metastable nuclear isomer of technetium-99. Technetium-99m is commonly used in medical imaging due to its short half-life and ability to emit gamma rays, while technetium-99 is a radioactive isotope with a longer half-life that is used for various medical and industrial applications, such as in radiopharmaceuticals and nuclear medicine.


The technetium-99 isotope has a half-life of 6.0 hours If a 100mg sample of technetium-99 were injected into a patient how many milligrams would still be present after one day?

I'll take a wild guess and say 6.25mg. if that's not right I too would like to know how to compute. I had a dose today but don't know the amount they infused.


What are some cons of the element technetium - 99?

One con of technetium-99 is its relatively short half-life of about 6 hours, which means it decays quickly and requires on-site production. Another con is that it is a beta-emitting radionuclide, which can pose radiation exposure risks if not handled properly. Additionally, the production of technetium-99 can generate radioactive waste that needs to be properly managed.


How many protons are in technetium 99?

Technetium-99 has 56 neutrons.


If technetium-98 has 55 neutrons how many does technetium-99 have?

Tc has 55 neutrons, its variants such as Tc-99 have a differing number of neutrons ranging from 54, 55, and 56 in the longer lived isotopes such as Tc-99. Tc-99 also has a half-life of 211,000 years.


What are the disadvantages of Technetium-99?

Some disadvantages of Technetium-99 include its short half-life (6 hours) which requires it to be produced on-site or very close to the location of use, potential for radioactive contamination if not handled properly, and environmental concerns related to its production and disposal.


What uses does technetium 99 have?

Technetium-99 is used as standard source for beta radiation.


What is the molecular weight of technetium 99?

The atomic mass (not molecular weight) of technetium-99 is 98,906 254 7(21).


What are the disadvantages of Technetium 99?

technetium-99 need to be made in a reactor as so this all cost money to do it. by saying that its main disadvantages are high costs and generation of large quantities of highly radioactive waste.


What is the chemical equation of technetium 99?

Technetium-99 has not a chemical equation but an isotopic symbol. This is Tc with:- to the left, as a superscript, 99- to the left as a subscript, 43


How many protons electrons and neutrons does technetium 99 have?

Technetium-99 has 43 protons, 56 neutrons and 43 electrons.


Is technetium 99 a solid?

yes