Seaborgium-262

Properties and data of the isotope ²⁶²Sg.

Content

General data

Name of the isotope:Seaborgium-262; Sg-262Symbol:²⁶²Sg or 262106SgMass number A:262 (= number of nucleons)Atomic number Z:106 (= number of protons)Neutrons N:156Isotopic mass:262.11634(4) u (atomic weight of Seaborgium-262)Nuclide mass:262.0581998 u (calculated nuclear mass without electrons)Mass excess:108.37001 MeVMass defect:2.064840288 u (per nucleus)Nuclear binding energy:1923.38633923 MeV (per nucleus)
7.34116923 MeV (average binding energy per nucleon)Separation energy:S_N = 7.71(4) MeV (first neutron)
S_P = 3.23(12) MeV (first proton)Half-life:6.9 msDecay constant λ:100.45611312463 s^-1Specific activity α:2.309010929306 × 10⁺²³ Bq g^-1
6240570079206.2 Ci g^-1Spin and parity:
(nuclear angular momentum)0+Year of discovery:2001

Radioactive Decay

Half-life T_½ = 6.9 ms respectively 6.9 × 10^-3 seconds s.

Decay mode	Daughter	Probability	Decay energy	γ energy (intensity)
SZ	div	≥ 78 %
α	²⁵⁸Rf	≤ 12 %	9.60(15) MeV

Isotones and Isobars

The following table shows the atomic nuclei that are isotonic (same neutron number N = 156) and isobaric (same nucleon number A = 262) with Seaborgium-262. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.

OZ	Isotone N = 156	Isobar A = 262
96	²⁵²Cm
97	²⁵³Bk
98	²⁵⁴Cf
99	²⁵⁵Es
100	²⁵⁶Fm
101	²⁵⁷Md
102	²⁵⁸No	²⁶²No
103	²⁵⁹Lr	²⁶²Lr
104	²⁶⁰Rf	²⁶²Rf
105	²⁶¹Db	²⁶²Db
106	²⁶²Sg	²⁶²Sg
107	²⁶³Bh	²⁶²Bh
108	²⁶⁴Hs