Periodic Table/Hafnium/¹⁵⁷Hf

← 156Hf158Hf →

¹⁵⁷Hf

Hafnium-157

Radioactive· Half-life: 115 ms

Nuclear Propertiesbinding energy · spin-parity · abundance

Protons (Z)

72

Neutrons (N)

85

Mass Number (A)

157

Atomic Mass

156.958288AMU

Spin / Parity

7/2-

Binding E/A

7.726keV

Natural Abundance

Trace / None

Half-life

115 ms

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

α

94.0%

β⁺

14.0%

Decay Chain

¹⁵⁷HfHafnium115 ms

α94.0%

β⁺¹⁵⁷Lu14.0%

¹⁵³YbYtterbium4.20 s

β⁺p0.01%

β⁺¹⁵³Tm

α¹⁴⁹Er

¹⁵²ErErbium10.3 s

α90.0%

β⁺¹⁵²Ho10.0%

¹⁴⁸DyDysprosium3.30 min

β⁺100.0%

¹⁴⁸TbTerbium1.00 h

β⁺100.0%

¹⁴⁸GdGadolinium71.3 y

α100.0%

2β⁺¹⁴⁸Sm

¹⁴⁴SmSamariumSTABLE

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

Other Isotopes of Hafnium

153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190

← Back to HafniumData: IAEA NDS · ENSDF