About   |   More   |   Search


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
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


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

© 1996 - 2022 Internetchemistry



I agree!

This site uses cookies. By using this website, you agree to the use of cookies! Learn more ...