257Md. Isotop von Mendelevium. Halbwertszeit: 5,5 h. Zerfallsreihe.

257MdMendelevium-257
Allgemein
NameMendelevium-257
Symbol257Md
Massenzahl257
ElementMendelevium
natürliche Häufigkeitsyn.
Halbwertszeit5,5 h
Anzahl der Zerfallsprodukte2
Zerfallsprodukte257Md → 257Fm, ZA: ε, ZE: 0,409 MeV
257Md → 253Es, ZA: α, ZE: 7,558 MeV
Zerfallsreihe
257Md
εα
257Fm
α SF
253Cf
β- 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
(–)
249Cm
β-
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
(–)
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
(–)