Noun
a crystalline metallic element not found in nature; occurs as one of the fission products of uranium
Source: WordNetOnly minute traces of technetium occur naturally in the Earth's crust—as a spontaneous fission product of uranium-238 or by neutron capture in molybdenum ores—but technetium is present naturally in red giant stars. Source: Internet
Because technetium is radioactive, with a half-life much less than the age of the star, its abundance must reflect its recent creation within that star. Source: Internet
For example, it is estimated that up to 1994, about 49,000 TBq (78 metric ton ) of technetium was produced in nuclear reactors, which is by far the dominant source of terrestrial technetium. Source: Internet
Her suggestion was not taken seriously at the time because her team had not carried out any experiments with uranium, and its claim to have discovered masurium ( technetium ) was disputed. Source: Internet
It consists of a trigonal prism with a technetium atom in the center and six hydrogen atoms at the corners. Source: Internet
Natural technetium and promethium are produced in this manner. Source: Internet