Periodic Table/Europium/¹⁶⁹Eu

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¹⁶⁹Eu

Europium-169

Radioactive

Nuclear Propertiesbinding energy · spin-parity · abundance

Protons (Z)

63

Neutrons (N)

106

Mass Number (A)

169

Atomic Mass

168.961717AMU

Spin / Parity

5/2+

Binding E/A

7.800keV

Natural Abundance

Trace / None

Half-life

Unknown

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

β⁻

Decay Chain

¹⁶⁹EuEuropium?

β⁻

¹⁶⁹GdGadolinium750 ms

β⁻100.0%

β⁻n¹⁶⁸Tb

¹⁶⁹TbTerbium5.13 s

β⁻100.0%

β⁻n¹⁶⁸Dy

¹⁶⁹DyDysprosium39.0 s

β⁻100.0%

¹⁶⁹HoHolmium4.72 min

β⁻100.0%

¹⁶⁹ErErbium9.39 d

β⁻100.0%

¹⁶⁹TmThuliumSTABLE

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

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

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