She discovered radioactivity and 2 elements, polonium and radium.
Radioactivity is discovered on uranium.
Uranium becomes lead
All the isotopes of uranium are radioactive !
Becquerel discovered the natural radioactivity of uranium in 1896.
Marie Curie referred to the energy spontaneously released by uranium as "radioactivity."
Uranium is not artificial radioactivity so it is not clear what the question is about.
In a nuclear power plant (nuclear reactor) the radioactivity of uranium is not a problem in normal work conditions.
uranium can spontaniously give off energy also known as radioactivity
Uranium 235 and uranium 238 are especially alpha particles emitters. They are natural radioactive isotopes.
a gram of natural uranium having various isotopic makeups has a radioactivity of about .67 microCuries. One Curie is equal to the radioactivity possessed by a gram of radium.
uranium is mainly related to radioactivity so i think that it is widely used in these types of works.