Periodic Table/Erbium/¹⁵⁵Er

← 154Er156Er →

¹⁵⁵Er

Erbium-155

Radioactive· Half-life: 5.30 min

Nuclear Propertiesbinding energy · spin-parity · abundance

Protons (Z)

68

Neutrons (N)

87

Mass Number (A)

155

Atomic Mass

154.933216AMU

Spin / Parity

7/2-

Binding E/A

7.905keV

Natural Abundance

Trace / None

Half-life

5.30 min

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

β⁺

100.0%

α

0.0%

Decay Chain

¹⁵⁵ErErbium5.30 min

β⁺100.0%

α¹⁵¹Dy0.02%

¹⁵⁵HoHolmium48.0 min

β⁺100.0%

¹⁵⁵DyDysprosium9.90 h

β⁺100.0%

¹⁵⁵TbTerbium5.32 d

EC100.0%

¹⁵⁵GdGadoliniumSTABLE

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

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