| Those that do not, such as technetium and americium, have been substituted, respectively, by rhenium and neodymium, which have similar traits. |
| They break uranium atoms, which are heavy, into lighter so-called fission products, such as technetium. |
| The first thing I'd like to clarify is that Japan has tried to produce technetium with a linear accelerator and it hasn't worked. |
| All forms of the element technetium are radioactive and have relatively short half-lives. |
| An isotope of the rare element technetium, denoted Tc, is widely used to form images of the heart, brain, lungs, spleen, and other organs. |
| The way you handle thallium, for example, is different from the way you handle technetium, so management is not as easy as with the technetium. |
