Flerovium-289m

Properties and data of the isotope ²⁸⁹Fl.

Content

General data

Name of the isotope:Flerovium-289m; Fl-289mSymbol:²⁸⁹Fl or 289114FlMass number A:289 (= number of nucleons)Atomic number Z:114 (= number of protons)Neutrons N:175Mass defect:291.408413948 u (per nucleus)Nuclear binding energy:271445.18914208 MeV (per nucleus)
939.25670983 MeV (average binding energy per nucleon)Half-life:Spin and parity:
(nuclear angular momentum)

Nuclear Isomers

Nuclear isomers or excited states with the activation energy in keV related to the ground state.

Nuclear Isomer	Excitation Energy	Half-life	Spin
²⁸⁹Fl		2.4 s	5/2+

Isotones and Isobars

The following table shows the atomic nuclei that are isotonic (same neutron number N = 175) and isobaric (same nucleon number A = 289) with Flerovium-289m. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.