Periodic Table/Samarium/¹³⁷Sm

← 136Sm138Sm →

¹³⁷Sm

Samarium-137

Radioactive· Half-life: 45.0 s

Nuclear Propertiesbinding energy · spin-parity · abundance

Protons (Z)

62

Neutrons (N)

75

Mass Number (A)

137

Atomic Mass

136.927008AMU

Spin / Parity

9/2-

Binding E/A

7.982keV

Natural Abundance

Trace / None

Half-life

45.0 s

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

β⁺

100.0%

Decay Chain

¹³⁷SmSamarium45.0 s

β⁺100.0%

¹³⁷PmPromethium?

β⁺

¹³⁷NdNeodymium38.5 min

β⁺100.0%

¹³⁷PrPraseodymium1.28 h

β⁺100.0%

¹³⁷CeCerium9.00 h

β⁺100.0%

¹³⁷LaLanthanum60.0 ky

EC100.0%

¹³⁷BaBariumSTABLE

7-step decay chain → stable · Primary path shown

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

← Back to SamariumData: IAEA NDS · ENSDF