257No. Isotop von Nobelium. Halbwertszeit: 25,0 s. Zerfallsreihe.

257NoNobelium-257
Allgemein
NameNobelium-257
Symbol257No
Massenzahl257
ElementNobelium
natürliche Häufigkeitsyn.
Halbwertszeit25,0 s
Anzahl der Zerfallsprodukte1
Zerfallsprodukte257No → 253Fm, ZA: α, ZE: 8,45 MeV
Zerfallsreihe
257No
α
253Fm
ε α
253Es
α SF
249Bk
β- α
249Cf
α SF
245Cm
α SF
241Pu
β-α SF
241Am
α SF
237Np
α
233Pa
β-
233U
α SF 24Ne
229Th
α
225Ra
β-
225Ac
α
221Fr
(–)
209Pb
β-
209Bi
α
205Tl
(–)
237U
β-
237Np
α
233Pa
β-
233U
α SF 24Ne
229Th
α
225Ra
β-
225Ac
α
221Fr
(–)
209Pb
β-
209Bi
α
205Tl
(–)
(–)
(–)
245Am
(–)
249Cf
α SF
245Cm
α SF
241Pu
β-α SF
241Am
α SF
237Np
α
233Pa
β-
233U
α SF 24Ne
229Th
α
225Ra
β-
225Ac
α
221Fr
(–)
209Pb
β-
209Bi
α
205Tl
(–)
237U
β-
237Np
α
233Pa
β-
233U
α SF 24Ne
229Th
α
225Ra
β-
225Ac
α
221Fr
(–)
209Pb
β-
209Bi
α
205Tl
(–)
(–)
(–)