Periodic Table/Iridium/¹⁸¹Ir

← 180Ir182Ir →

¹⁸¹Ir

Iridium-181

Radioactive· Half-life: 4.90 min

Nuclear Propertiesbinding energy · spin-parity · abundance

Protons (Z)

77

Neutrons (N)

104

Mass Number (A)

181

Atomic Mass

180.957635AMU

Spin / Parity

5/2-

Binding E/A

7.739keV

Natural Abundance

Trace / None

Half-life

4.90 min

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

β⁺

100.0%

Decay Chain

¹⁸¹IrIridium4.90 min

β⁺100.0%

¹⁸¹OsOsmium1.75 h

β⁺100.0%

¹⁸¹ReRhenium19.9 h

β⁺100.0%

¹⁸¹WTungsten121 d

EC100.0%

¹⁸¹TaTantalumSTABLE

5-step decay chain → stable · Primary path shown

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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