Periodic Table/Iridium/¹⁶⁶Ir

← 165Ir167Ir →

¹⁶⁶Ir

Iridium-166

Radioactive· Half-life: 10.5 ms

Nuclear Propertiesbinding energy · spin-parity · abundance

Protons (Z)

77

Neutrons (N)

89

Mass Number (A)

166

Atomic Mass

165.985716AMU

Spin / Parity

2

Binding E/A

7.552keV

Natural Abundance

Trace / None

Half-life

10.5 ms

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

α

93.0%

p

7.0%

Decay Chain

¹⁶⁶IrIridium10.5 ms

α93.0%

p¹⁶⁵Os7.00%

¹⁶²ReRhenium107 ms

α94.0%

β⁺¹⁶²W

¹⁵⁸TaTantalum49.0 ms

α100.0%

β⁺¹⁵⁸Hf

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

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

Other Isotopes of Iridium

163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205

← Back to IridiumData: IAEA NDS · ENSDF