Periodic Table/Samarium/¹³⁵Sm

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¹³⁵Sm

Samarium-135

Radioactive· Half-life: 10.3 s

Nuclear Propertiesbinding energy · spin-parity · abundance

Protons (Z)

62

Neutrons (N)

73

Mass Number (A)

135

Atomic Mass

134.932520AMU

Spin / Parity

7/2+

Binding E/A

7.943keV

Natural Abundance

Trace / None

Half-life

10.3 s

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

β⁺

100.0%

β⁺p

0.0%

Decay Chain

¹³⁵SmSamarium10.3 s

β⁺100.0%

β⁺p¹³⁴Nd0.02%

¹³⁵PmPromethium49.0 s

β⁺100.0%

¹³⁵NdNeodymium12.4 min

β⁺100.0%

¹³⁵PrPraseodymium24.0 min

β⁺100.0%

¹³⁵CeCerium17.7 h

β⁺100.0%

¹³⁵LaLanthanum18.9 h

β⁺100.0%

¹³⁵BaBariumSTABLE

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

Other Isotopes of Samarium

128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168

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