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Moscovium-290

Properties and data of the isotope 290Mc.

 

The short-lived, radioactive isotope moscovium-290 has been observed as a direct decay product of the artificially generated nuclide tennessine-294; synthetic production has not yet succeeded. At 650 milliseconds, the nuclide 290Mc has the longest known half-life of any Mc isotope [1]. Accordingly, the atomic mass of the element Moscovium is given as [290].

See also: list of Moscovium isotopes.

 

General data

Name of the isotope:Moscovium-290; Mc-290Symbol:290McMass number A:290Atomic number Z:115 (= number of protons)Neutrons N:175Isotopic mass:290.19598(73) u (atomic weight of Moscovium-290)Nuclide mass:290.1329045 u (calculated nuclear mass without electrons)Mass excess:182.55419 MeVMass defect:2.22025898 u (per nucleus)Nuclear binding energy:2068.15791832 MeV (per nucleus)
7.13157903 MeV (average binding energy per nucleon)
Half-life:0.65 sSpin and parity:Year of discovery:2009

 

Radioactive Decay

Half-life T½ = 0.65 s.

Decay modeDaughterProbabilityDecay energyγ energy
(intensity)
α286Nh
SF ?

 

Isotones and Isobars

The following table shows the atomic nuclei that are isotonic (same neutron number N = 175) and isobaric (same nucleon number A = 290) with Moscovium-290. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.

 

OZIsotone N = 175Isobar A = 290
114289Fl
115290Mc290Mc
116291Lv290Lv

 

Literature and References

[1] - Yu. Ts. Oganessian et al.:
Synthesis of a New Element with Atomic Number Z=117.
In: Physical Review Letters, (2010), DOI 10.1103/PhysRevLett.104.142502.

 


Category: Isotopes

Last update: 07.11.2022



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