Periodic Table/Europium/¹³⁹Eu

← 138Eu140Eu →

¹³⁹Eu

Europium-139

Radioactive· Half-life: 17.9 s

Nuclear Propertiesbinding energy · spin-parity · abundance

Protons (Z)

63

Neutrons (N)

76

Mass Number (A)

139

Atomic Mass

138.929792AMU

Spin / Parity

11/2-

Binding E/A

7.956keV

Natural Abundance

Trace / None

Half-life

17.9 s

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

β⁺

100.0%

Decay Chain

¹³⁹EuEuropium17.9 s

β⁺100.0%

¹³⁹SmSamarium2.57 min

β⁺100.0%

¹³⁹PmPromethium4.15 min

β⁺100.0%

¹³⁹NdNeodymium29.7 min

β⁺100.0%

¹³⁹PrPraseodymium4.41 h

β⁺100.0%

¹³⁹CeCerium138 d

EC100.0%

¹³⁹LaLanthanumSTABLE

7-step decay chain → stable · Primary path shown

Other Isotopes of Europium

130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170

← Back to EuropiumData: IAEA NDS · ENSDF