Periodic Table/Fermium/²⁵⁰Fm

← 249Fm251Fm →

²⁵⁰Fm

Fermium-250

Radioactive· Half-life: 31.0 min

Nuclear Propertiesbinding energy · spin-parity · abundance

Protons (Z)

100

Neutrons (N)

150

Mass Number (A)

250

Atomic Mass

250.079520AMU

Spin / Parity

0+

Binding E/A

7.258keV

Natural Abundance

Trace / None

Half-life

31.0 min

Decay Modesoverview · half-life · α · β⁻ · β⁺

α

100.0%

SF

0.0%

EC

Decay Chain

²⁵⁰FmFermium31.0 min

α100.0%

EC²⁵⁰Es

²⁴⁶CfCalifornium1.49 d

α100.0%

EC²⁴⁶Bk

²⁴²CmCurium163 d

α100.0%

34Si²⁰⁸Pb1.10%

2β⁺²⁴²Pu

²³⁸PuPlutonium87.7 y

α100.0%

30Mg²⁰⁸Pb6.00%

32Si²⁰⁶Hg1.40%

²³⁴UUranium246 ky

α100.0%

26Ne²⁰⁸Pb9.00%

28Mg²⁰⁶Hg1.40%

²³⁰ThThorium75.4 ky

α100.0%

24Ne²⁰⁶Hg5.80%

²²⁶RaRadium1.60 ky

α100.0%

¹⁴C²¹²Pb2.60%

2β⁻²²⁶Th

²²²RnRadon3.82 d

α100.0%

²¹⁸PoPolonium3.10 min

α100.0%

β⁻²¹⁸At0.02%

²¹⁴PbLead27.1 min

β⁻100.0%

²¹⁴BiBismuth19.9 min

β⁻100.0%

α²¹⁰Tl0.02%

β⁻α²¹⁰Pb0.00%

²¹⁴PoPolonium163 μs

α100.0%

²¹⁰PbLead22.2 y

β⁻100.0%

α²⁰⁶Hg1.90%

²¹⁰BiBismuth5.01 d

β⁻100.0%

α²⁰⁶Tl13.2%

²¹⁰PoPolonium138 d

α100.0%

²⁰⁶PbLeadSTABLE

16-step decay chain → stable · Primary path shown · branching ratios indicated

Other Isotopes of Fermium

241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260

← Back to FermiumData: IAEA NDS · ENSDF