²⁸⁵Fl — Unstable · t½ ≈ 0.58 s · Decay: α → ²⁸¹Cn · Type: synthetic · Uses: research.
²⁸⁶Fl — Unstable · t½ ≈ 0.13 s · Decay: α → ²⁸²Cn · Type: synthetic · Uses: research.
²⁸⁷Fl — Unstable · t½ ≈ 2.6 s · Decay: α → ²⁸³Cn · Type: synthetic · Uses: research.
²⁸⁸Fl — Unstable · t½ ≈ 0.7 s · Decay: α → ²⁸⁴Cn · Type: synthetic · Uses: research.
²⁸⁹Fl — Unstable · t½ ≈ 2.6 s · Decay: α → ²⁸⁵Cn · Type: synthetic · Uses: research.
²⁹⁰Fl — Unstable · t½ ≈ 19.0 s · Decay: α → ²⁸⁶Cn · Type: synthetic · Uses: longest-lived Fl isotope, chemical studies.
Flerovium — isotope count: 6 total · Stable: none · Unstable: 6.
(Data: IAEA LiveChart, NUBASE2020, ENSDF, Wikipedia “Isotopes of flerovium.” Notable applications: all isotopes are synthetic and short-lived; ²⁹⁰Fl is the longest-lived, providing rare opportunities for chemical studies of group 14 superheavy elements.)
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