Seaborgium-266

Properties and data of the isotope ²⁶⁶Sg.

Contents

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:160Isotopic 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:S_N = 7.25(27) MeV (first neutron)
S_P = 4.15(33) MeV (first proton)Half-life:0.34 sDecay constant λ:2.0386681781175 s^-1Specific activity α:4.61546877266 × 10⁺²¹ Bq g^-1
124742399261.27 Ci g^-1Spin and parity:
(nuclear angular momentum)0+Year of discovery:2006

Radioactive Decay

Half-life T_½ = 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.

Z	Isotone N = 160	Isobar A = 266
102	²⁶²No
103	²⁶³Lr	²⁶⁶Lr
104	²⁶⁴Rf	²⁶⁶Rf
105	²⁶⁵Db	²⁶⁶Db
106	²⁶⁶Sg	²⁶⁶Sg
107	²⁶⁷Bh	²⁶⁶Bh
108	²⁶⁸Hs	²⁶⁶Hs
109	²⁶⁹Mt	²⁶⁶Mt
110	²⁷⁰Ds