What element has the symbol 'Fl'?

The symbol Fl stands for Flerovium, element 114, a synthetic “superheavy” element with very short-lived isotopes. It was first produced at the Joint Institute for Nuclear Research (Dubna, Russia) and named in 2012 after the Flerov Laboratory of Nuclear Reactions, honoring physicist Georgy Flyorov. It briefly held the placeholder name ununquadium (Uuq). Why the others are wrong: Fluorine is F, Fermium is Fm, and “Florine” is just a misspelling of Fluorine. Memory tip: common, lighter elements often have single-letter symbols (F for Fluorine), while unfamiliar two-letter symbols like Fl often indicate heavier, lab-made elements. Think “Fl = Flerov(ium)/Flerov Laboratory,” not Fluorine.