Periodic Table/Tantalum/¹⁵⁵Ta

156Ta →

¹⁵⁵Ta

Tantalum-155

Radioactive· Half-life: 3.20 ms

Nuclear Propertiesbinding energy · spin-parity · abundance

Protons (Z)

73

Neutrons (N)

82

Mass Number (A)

155

Atomic Mass

154.974248AMU

Spin / Parity

11/2-

Binding E/A

7.617keV

Natural Abundance

Trace / None

Half-life

3.20 ms

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

p

100.0%

Decay Chain

¹⁵⁵TaTantalum3.20 ms

p100.0%

¹⁵⁴HfHafnium2.00 s

β⁺100.0%

α¹⁵⁰Yb0.00%

¹⁵⁴LuLutetium?

β⁺

α¹⁵⁰Tm

¹⁵⁴YbYtterbium409 ms

α92.6%

β⁺¹⁵⁴Tm7.40%

¹⁵⁰ErErbium18.5 s

β⁺100.0%

¹⁵⁰HoHolmium1.28 min

β⁺100.0%

¹⁵⁰DyDysprosium7.17 min

β⁺66.4%

α¹⁴⁶Gd33.6%

¹⁵⁰TbTerbium3.48 h

β⁺100.0%

α¹⁴⁶Eu

¹⁵⁰GdGadolinium1.79 My

α100.0%

2β⁺¹⁵⁰Sm

¹⁴⁶SmSamarium68.0 My

α100.0%

¹⁴²NdNeodymiumSTABLE

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

Other Isotopes of Tantalum

155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194

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