Periodic Table/Iridium/¹⁷¹Ir

← 170Ir172Ir →

¹⁷¹Ir

Iridium-171

Radioactive· Half-life: 3.10 s

Nuclear Propertiesbinding energy · spin-parity · abundance

Protons (Z)

77

Neutrons (N)

94

Mass Number (A)

171

Atomic Mass

170.971646AMU

Spin / Parity

1/2+

Binding E/A

7.643keV

Natural Abundance

Trace / None

Half-life

3.10 s

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

β⁺

α

15.0%

Decay Chain

¹⁷¹IrIridium3.10 s

α15.0%

β⁺¹⁷¹Os

¹⁶⁷ReRhenium3.40 s

α100.0%

β⁺¹⁶⁷W

¹⁶³TaTantalum10.6 s

β⁺100.0%

α¹⁵⁹Lu

¹⁶³HfHafnium40.0 s

β⁺100.0%

α¹⁵⁹Yb

¹⁶³LuLutetium3.97 min

β⁺100.0%

¹⁶³YbYtterbium11.1 min

β⁺100.0%

¹⁶³TmThulium1.81 h

β⁺100.0%

¹⁶³ErErbium1.25 h

β⁺100.0%

¹⁶³HoHolmium4.57 ky

EC100.0%

¹⁶³DyDysprosiumSTABLE

10-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

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