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Isotopes of Flerovium

List, data and properties of all known isotopes of Flerovium.


Content

Flerovium isotopes

 

Isotope Table: Flerovium

The two following tables list the most important data and properties of the Flerovium isotopes. Further information on the individual Flerovium isotopes is listed on separate pages and can be accessed via the link in column 1.

 

Atomic Properties

Isotope
Nuclide
ENAtomic Mass
[Nuclear Mass]
{Mass Excess}
Spin I
(h/2π)
Parent
123456
Flerovium-284284114Fl170284.18119(70) u
[284.1186629 u]
{93318.1774 MeV}
0+
Flerovium-285285114Fl171285.18350(43) u
[285.1209729 u]
{170.92915 MeV}
(3/2+)
Flerovium-286286114Fl172286.18423(59) u
[286.1217029 u]
{171.60914 MeV}
0+
Flerovium-287287114Fl173287.18672(66) u
[287.1241929 u]
{173.92856 MeV}
Flerovium-287m287m114Fl173
Flerovium-288288114Fl174288.18778(82) u
[288.1252529 u]
{174.91594 MeV}
0+
Flerovium-289289114Fl175289.19052(55) u
[289.1279929 u]
{177.46824 MeV}
5/2+
Flerovium-289m289m114Fl175
Flerovium-290290114Fl176290.19188(75) u
[290.1293529 u]
{178.73507 MeV}
0+

 

Radioactive Decay Properties

IsotopeRadioactive DecayExtern
Half-lifeDecay ModeProbabilityEnergy
789101112
Fl-2842.5 msSF div
α → 280Cn
≥ 75 %
≤ 25 %

10.7(3) MeV
AL
Fl-2850.101 sα → 281Cn
SF div
≥ 87.5 %
≤ 12.5 %
10.560(71) MeV
AL
Fl-2860.166 sSF div
α → 282Cn
40 %
60 %

10.335(41) MeV
AL
Fl-2870.40 sα → 283Cn
SF div
> 95 %
< 5 %
10.167(52) MeV
AL
Fl-287m
Fl-2880.64 sα → 284Cn
SF div
≥ 97 %
≤ 3 %
10.076(12) MeV
AL
Fl-2892.4 sα → 285Cn
SF div
> 94 %
< 6 &
9.954(65) MeV
AL
Fl-289m
Fl-29019 sEC → 290Nh
SF div
α → 286Cn


0.416(843) MeV

9.856(30) MeV

 

Notes (related to the columns):

1 - name of the nuclide, isotope.
2 - E: isotope symbol with mass number (superscript; number of nucleons) and Atomic number (subscript; number of protons).
3 - N: number of neutrons.
4 - relative atomic mass of the Flerovium isotope (isotopic mass including electrons) and the mass of the atomic nucleus in square brackets (nuclear mass, nuclide mass without electrons), each related to 12C = 12.00000 [2]. In addition, the mass excess is given in MeV.
5 - nuclear spin I, unit: h/2π.
6 - source nuclides: Possible, assumed or actual source nuclides (mother nuclides, parent nuclides). If applicable, the corresponding decay modes can be found in the data for the respective starting nuclide.

7 - isotope notation in short form.
8 - decay: half-live of the Flerovium isotope (a = years; ; d = days; h = hours; min = minutes; s = seconds).
9 - decay mode: type of decay into the respective daughter nuclides with n = neutron emission; p = proton emission; α = alpha decay; β- = beta minus decay with electron emission; EC = electron capture; β+ = positron emission; ε = β+ and/or EC; Iso = isomeric transition; CD = cluster decay; SF = spontaneous decay.
10 - decay probability in percent (%).
11 - decay energy; Particle energy related to decay type.
12 - other information and notes: AL = Adopted Levels (link to external data [1]).

Miscellaneous:

()- Numbers in brackets: uncertainty to represent the spread of the reported value.
~ - Theoretical values or systematic trends.
  - unlisted-: Nuclides that have already been mentioned in the literature but for some reason can no longer be found in the current nuclide tables because their discovery e.g. has not confirmed.

 

Literature Sources and References

Properties of the Flerovium nucleides

[1] - NuDat: National Nuclear Data Center, Brookhaven National Laboratory, based on ENSDF and the Nuclear Wallet Cards.

[2] - G. Audi et. al.: The NUBASE evaluation of nuclear and decay properties. Nuclear Physics, (2003), DOI 10.1016/j.nuclphysa.2003.11.001.

[3] - Live Chart of Nuclides. Nuclear structure and decay data.

Flerovium: NMR properties

[4] - N. J. Stone: Table of nuclear magnetic dipole and electric quadrupole moments. Atomic Data and Nuclear Data Tables, (2005), DOI 10.1016/j.adt.2005.04.001.

[5] - Pekka Pyykkö: Year-2008 nuclear quadrupole moments. Molecular Physics, (2008), DOI 10.1080/00268970802018367.

[6] - Pekka Pyykkö: Year-2017 nuclear quadrupole moments. Molecular Physics, (2018), DOI 10.1080/00268976.2018.1426131.

[7] - N. J. Stone: Table of recommended nuclear magnetic dipole moments. IAEA, (2019).

More sources:

[8] - Isotopic abundances, atomic weights and isotopic masses: see respective keyword.

 


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Last update: 2022-11-28


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