Periodic Table/Einsteinium/²⁴⁰Es

← 239Es241Es →

²⁴⁰Es

Einsteinium-240

Radioactive· Half-life: 6.00 s

Nuclear Propertiesbinding energy · spin-parity · abundance

Protons (Z)

99

Neutrons (N)

141

Mass Number (A)

240

Atomic Mass

240.068949AMU

Spin / Parity

4-

Binding E/A

7.270keV

Natural Abundance

Trace / None

Half-life

6.00 s

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

α

70.0%

β⁺

30.0%

β⁺SF

0.2%

Decay Chain

²⁴⁰EsEinsteinium6.00 s

α70.0%

β⁺²⁴⁰Cf30.0%

²³⁶BkBerkelium26.0 s

β⁺100.0%

α²³²Am

²³⁶CmCurium6.80 min

β⁺82.0%

α²³²Pu18.0%

²³⁶AmAmericium3.60 min

β⁺100.0%

α²³²Np4.00%

²³⁶PuPlutonium2.86 y

α100.0%

28Mg²⁰⁸Pb2.00%

2β⁺²³⁶U

²³²UUranium68.9 y

α100.0%

24Ne²⁰⁸Pb8.90%

28Mg²⁰⁴Hg5.00%

²²⁸ThThorium1.91 y

α100.0%

20O²⁰⁸Pb1.13%

²²⁴RaRadium3.63 d

α100.0%

¹⁴C²¹⁰Pb4.00%

²²⁰RnRadon55.6 s

α100.0%

2β⁻²²⁰Ra

²¹⁶PoPolonium144 ms

α100.0%

2β⁻²¹⁶Rn

²¹²PbLead10.6 h

β⁻100.0%

²¹²BiBismuth1.01 h

β⁻64.1%

α²⁰⁸Tl35.9%

β⁻α²⁰⁸Pb0.01%

²¹²PoPolonium294 ns

α100.0%

²⁰⁸PbLeadSTABLE

14-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