Periodic Table/Terbium/¹⁴⁹Tb

← 148Tb150Tb →

¹⁴⁹Tb

Terbium-149

Radioactive· Half-life: 4.12 h

Nuclear Propertiesbinding energy · spin-parity · abundance

Protons (Z)

65

Neutrons (N)

84

Mass Number (A)

149

Atomic Mass

148.923254AMU

Spin / Parity

1/2+

Binding E/A

7.987keV

Natural Abundance

Trace / None

Half-life

4.12 h

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

β⁺

83.3%

α

16.7%

Decay Chain

¹⁴⁹TbTerbium4.12 h

β⁺83.3%

α¹⁴⁵Eu16.7%

¹⁴⁹GdGadolinium9.28 d

β⁺100.0%

α¹⁴⁵Sm4.30%

¹⁴⁹EuEuropium93.1 d

EC100.0%

¹⁴⁹SmSamariumSTABLE

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

Other Isotopes of Terbium

135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174

← Back to TerbiumData: IAEA NDS · ENSDF