Periodic Table/Einsteinium/²⁵⁴Es

← 253Es255Es →

²⁵⁴Es

Einsteinium-254

Radioactive· Half-life: 276 d

Nuclear Propertiesbinding energy · spin-parity · abundance

Protons (Z)

99

Neutrons (N)

155

Mass Number (A)

254

Atomic Mass

254.088024AMU

Spin / Parity

7+

Binding E/A

7.244keV

Natural Abundance

Trace / None

Half-life

276 d

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

α

100.0%

EC

β⁻

1.7%

SF

3.0%

Decay Chain

²⁵⁴EsEinsteinium276 d

α100.0%

β⁻²⁵⁴Fm1.74%

EC²⁵⁴Cf

²⁵⁰BkBerkelium3.21 h

β⁻100.0%

²⁵⁰CfCalifornium13.1 y

α99.9%

²⁴⁶CmCurium4.71 ky

α100.0%

²⁴²PuPlutonium375 ky

α100.0%

²³⁸UUranium4.46 Gy

α100.0%

2β⁻²³⁸Pu2.20%

²³⁴ThThorium24.1 d

β⁻100.0%

α²³⁰Ra

²³⁴PaProtactinium6.70 h

β⁻100.0%

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

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

Other Isotopes of Einsteinium

239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258

← Back to EinsteiniumData: IAEA NDS · ENSDF