Periodic Table/Thulium/¹⁸¹Tm

← 180Tm182Tm →

¹⁸¹Tm

Thulium-181

Radioactive

Nuclear Propertiesbinding energy · spin-parity · abundance

Protons (Z)

69

Neutrons (N)

112

Mass Number (A)

181

Atomic Mass

180.961954AMU

Spin / Parity

1/2+

Binding E/A

7.774keV

Natural Abundance

Trace / None

Half-life

Unknown

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

β⁻

β⁻n

Decay Chain

¹⁸¹TmThulium?

β⁻

β⁻n¹⁸⁰Yb

¹⁸¹YbYtterbium?

β⁻

¹⁸¹LuLutetium3.50 min

β⁻100.0%

¹⁸¹HfHafnium42.4 d

β⁻100.0%

¹⁸¹TaTantalumSTABLE

5-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