Periodic Table/Hafnium/¹⁶¹Hf

← 160Hf162Hf →

¹⁶¹Hf

Hafnium-161

Radioactive· Half-life: 18.4 s

Nuclear Propertiesbinding energy · spin-parity · abundance

Protons (Z)

72

Neutrons (N)

89

Mass Number (A)

161

Atomic Mass

160.950278AMU

Spin / Parity

7/2-

Binding E/A

7.781keV

Natural Abundance

Trace / None

Half-life

18.4 s

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

β⁺

99.7%

α

0.3%

Decay Chain

¹⁶¹HfHafnium18.4 s

β⁺99.7%

α¹⁵⁷Yb0.29%

¹⁶¹LuLutetium1.28 min

β⁺100.0%

¹⁶¹YbYtterbium4.20 min

β⁺100.0%

¹⁶¹TmThulium30.2 min

β⁺100.0%

¹⁶¹ErErbium3.21 h

β⁺100.0%

¹⁶¹HoHolmium2.48 h

EC100.0%

¹⁶¹DyDysprosiumSTABLE

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