
1) Chemical element
Found on
https://www.crosswordclues.com/clue/flerovium

Flerovium is the superheavy artificial chemical element with the symbol Fl and atomic number 114. It is an extremely radioactive element that has only been created in the laboratory and has not been observed in nature. The element is named after the Flerov Laboratory of Nuclear Reactions of the Joint Institute for Nuclear Research in Dubna, Russia...
Found on
http://en.wikipedia.org/wiki/Flerovium
No exact match found.