Isotopes of flerovium

Isotopes of flerovium (114Fl)
Main isotopes Decay
abun­dance half-life (t1/2) mode pro­duct
284Fl synth 2.5 ms[1][2] SF –
α 280Cn
285Fl synth 100 ms[3] α 281Cn
286Fl synth 105 ms[4] α55% 282Cn
SF45% –
287Fl synth 360 ms[4] α 283Cn
ε?[5] 287Nh
Preview warning: Infobox Fl isotopes: Decay mode not recognised, input shown unedited "dm2=ε?" cat#D
288Fl synth 653 ms α 284Cn
289Fl synth 2.1 s α 285Cn
290Fl synth 19 s?[6][7] EC 290Nh
α 286Cn

Flerovium (114Fl) is a synthetic element, and thus a standard atomic weight cannot be given. Like all synthetic elements, it has no stable isotopes. The first isotope to be synthesized was 289Fl in 1999 (or possibly 1998). Flerovium has six known isotopes, along with the unconfirmed 290Fl, and possibly two nuclear isomers. The longest-lived isotope is 289Fl with a half-life of 1.9 seconds, but 290Fl may have a longer half-life of 19 seconds.

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