Periodic Table/Samarium/¹⁵⁷Sm

← 156Sm158Sm →

¹⁵⁷Sm

Samarium-157

Radioactive· Half-life: 8.03 min

Nuclear Propertiesbinding energy · spin-parity · abundance

Protons (Z)

62

Neutrons (N)

95

Mass Number (A)

157

Atomic Mass

156.928419AMU

Spin / Parity

3/2-

Binding E/A

7.985keV

Natural Abundance

Trace / None

Half-life

8.03 min

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

β⁻

100.0%

Decay Chain

¹⁵⁷SmSamarium8.03 min

β⁻100.0%

¹⁵⁷EuEuropium15.2 h

β⁻100.0%

¹⁵⁷GdGadoliniumSTABLE

3-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

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