Periodic Table/Erbium/¹⁵⁷Er

← 156Er158Er →

¹⁵⁷Er

Erbium-157

Radioactive· Half-life: 18.6 min

Nuclear Propertiesbinding energy · spin-parity · abundance

Protons (Z)

68

Neutrons (N)

89

Mass Number (A)

157

Atomic Mass

156.931923AMU

Spin / Parity

3/2-

Binding E/A

7.915keV

Natural Abundance

Trace / None

Half-life

18.6 min

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

β⁺

100.0%

Decay Chain

¹⁵⁷ErErbium18.6 min

β⁺100.0%

¹⁵⁷HoHolmium12.6 min

β⁺100.0%

¹⁵⁷DyDysprosium8.14 h

β⁺100.0%

¹⁵⁷TbTerbium71.0 y

EC100.0%

¹⁵⁷GdGadoliniumSTABLE

5-step decay chain → stable · Primary path shown

Other Isotopes of Erbium

142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180

← Back to ErbiumData: IAEA NDS · ENSDF