See also: List of individual Seaborgium isotopes (and general data sources).
General data
Name of the isotope:Seaborgium-266; Sg-266Symbol:266Sg or 266106SgMass number A:266 (= number of nucleons)Atomic number Z:106 (= number of protons)Neutrons N:160Nucleon pairing (Z - N):even - evenNuclear ratio (N/Z ratio):1.5094339622642 (= neutron-proton ratio)Neutron excess (N-Z):54Isotopic mass:266.12197(26) u (atomic weight of Seaborgium-266)Nuclide mass:266.0638298 u (calculated nuclear mass without electrons)Mass excess:113.61432 MeVMass defect:2.093869952 u (per nucleus)Nuclear binding energy:1950.42729707 MeV (per nucleus) 7.33243345 MeV (average binding energy per nucleon)Separation energy:SN = 7.25(27) MeV (first neutron) SP = 4.15(33) MeV (first proton)Half-life:0.34 sDecay constant λ:2.0386681781175 s-1Specific activity α:4.613353317486 × 10+21 Bq g-1 124685224796.94 Ci g-1Spin and parity: (nuclear angular momentum)0+Year of discovery:2006
Radioactive Decay
Half-life T½ = 0.34 s respectively 3.4 × 10-1 seconds s.
Decay mode
Daughter
Probability
Decay energy
γ energy (intensity)
α
262Rf
18 %
8.80(10) MeV
SZ
div
Isotones and Isobars
The following table shows the atomic nuclei that are isotonic (same neutron number N = 160) and isobaric (same nucleon number A = 266) with Seaborgium-266. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.
