Livermorium-290
Properties and data of the isotope 290Lv.
Livermorium-290 is a radioisotope of the chemical element livermorium, which, in addition to the element-specific 116 protons, has 174 neutrons in the atomic nucleus, resulting in the mass number 290. The very short-lived, only artificially producible, unstable and therefore radioactive nuclide has no practical significance; dealing with 290Lv is for academic purposes only.
See also: list of Livermorium isotopes.
General data
Name of the isotope:Livermorium-290; Lv-290Symbol:290Lv or 290116LvMass number A:290 (= number of nucleons)Atomic number Z:116 (= number of protons)Neutrons N:174Isotopic mass:290.19864(59) u (atomic weight of Livermorium-290)Nuclide mass:290.1350162 u (calculated nuclear mass without electrons)Mass excess:185.03197 MeVMass defect:2.216759096 u (per nucleus)Nuclear binding energy:2064.89779737 MeV (per nucleus)
7.12033723 MeV (average binding energy per nucleon)Separation energy:SN = 7.501(747) MeV (first neutron)
SP = 2.944(953) MeV (first proton)Half-life:0.0083(+35-19) sDecay constant λ:83.511708501198 s-1Specific activity α:1.734204386373 × 10+23 Bq g-1
4687038882089.5 Ci g-1Spin and parity:
(nuclear angular momentum)0+Year of discovery:2004
Radioactive Decay
Half-life T½ = 0.0083(+35-19) s respectively 8.3 × 10-3 seconds s.
Decay mode | Daughter | Probability | Decay energy | γ energy (intensity) |
---|
α | 286Fl | > 92 % | 10.997(58) MeV | |
SF | div | ≤ 8 % | | |
Isotones and Isobars
The following table shows the atomic nuclei that are isotonic (same neutron number N = 174) and isobaric (same nucleon number A = 290) with Livermorium-290. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.
Z | Isotone N = 174 | Isobar A = 290 |
111 | 285Rg | |
112 | 286Cn | |
114 | 288Fl | 290Fl |
115 | 289Mc | 290Mc |
116 | 290Lv | 290Lv |
Last update: 2023-05-03
Perma link: https://www.chemlin.org/isotope/livermorium-290
© 1996 - 2025 ChemLin