Radioactive element (6)
'radioactive element' is the definition.
(I know that uranium is a radioactive element)
This is all the clue.
(Other definitions for uranium that I've seen before include "Radioactive element of atomic number 92" , "Chemical element, source of nuclear energy" , "Radioactive metallic element" , "Radioactive element used for nuclear energy" , "Chemical element used to get nuclear energy" .)
'radioactive element' is the definition.
(I've seen this before)
This is the entire clue.
(Other definitions for radium that I've seen before include "Radioactive element discovered by the Curies" , "Ra (atomic number 88)" , "Metallic element discovered by the Curies" , "Element with symbol Ra" , "Radioactive metallic element found in pitchblende" .)
'radioactive element' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for plutonium that I've seen before include "Nuclear material" , "Radioactive element" , "Radioactive material, Pu" , "sign of this bomb-making material" , "Fuel for nuclear reactors" .)
'radioactive element' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for americium that I've seen before include "Radioactive element" , "Emits gamma radiation" .)
'radioactive element' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for radon that I've seen before include "Radioactive gas, linked to granite" , "Inert gas that occurs naturally" , "Rare noble gas" , "gets no reaction" , "Inert gas - adorn (anag)" .)