Periodic Table/Tantalum/¹⁵⁷Ta

← 156Ta158Ta →

¹⁵⁷Ta

Tantalum-157

Radioactive· Half-life: 10.1 ms

Nuclear Propertiesbinding energy · spin-parity · abundance

Protons (Z)

73

Neutrons (N)

84

Mass Number (A)

157

Atomic Mass

156.968227AMU

Spin / Parity

1/2+

Binding E/A

7.659keV

Natural Abundance

Trace / None

Half-life

10.1 ms

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

α

96.6%

p

3.4%

β⁺

Decay Chain

¹⁵⁷TaTantalum10.1 ms

α96.6%

p¹⁵⁶Hf3.40%

β⁺¹⁵⁷Hf

¹⁵³LuLutetium900 ms

α

β⁺¹⁵³Yb

p¹⁵²Yb0.00%

¹⁴⁹TmThulium900 ms

β⁺100.0%

β⁺p¹⁴⁸Ho0.26%

¹⁴⁹ErErbium4.00 s

β⁺100.0%

β⁺p¹⁴⁸Dy7.00%

¹⁴⁹HoHolmium21.1 s

β⁺100.0%

¹⁴⁹DyDysprosium4.20 min

β⁺100.0%

¹⁴⁹TbTerbium4.12 h

β⁺83.3%

α¹⁴⁵Eu16.7%

¹⁴⁹GdGadolinium9.28 d

β⁺100.0%

α¹⁴⁵Sm4.30%

¹⁴⁹EuEuropium93.1 d

EC100.0%

¹⁴⁹SmSamariumSTABLE

10-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

← Back to TantalumData: IAEA NDS · ENSDF