Periodic Table/Thulium/¹⁵⁶Tm

← 155Tm157Tm →

¹⁵⁶Tm

Thulium-156

Radioactive· Half-life: 1.40 min

Nuclear Propertiesbinding energy · spin-parity · abundance

Protons (Z)

69

Neutrons (N)

87

Mass Number (A)

156

Atomic Mass

155.938986AMU

Spin / Parity

2-

Binding E/A

7.864keV

Natural Abundance

Trace / None

Half-life

1.40 min

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

β⁺

100.0%

α

0.1%

Decay Chain

¹⁵⁶TmThulium1.40 min

β⁺100.0%

α¹⁵²Ho0.06%

¹⁵⁶ErErbium19.5 min

β⁺100.0%

α¹⁵²Dy1.20%

¹⁵⁶HoHolmium56.0 min

β⁺100.0%

¹⁵⁶DyDysprosiumSTABLE

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

Other Isotopes of Thulium

144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182

← Back to ThuliumData: IAEA NDS · ENSDF