Periodic Table/Iridium/¹⁷⁷Ir

← 176Ir178Ir →

¹⁷⁷Ir

Iridium-177

Radioactive· Half-life: 29.8 s

Nuclear Propertiesbinding energy · spin-parity · abundance

Protons (Z)

77

Neutrons (N)

100

Mass Number (A)

177

Atomic Mass

176.961301AMU

Spin / Parity

5/2-

Binding E/A

7.712keV

Natural Abundance

Trace / None

Half-life

29.8 s

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

β⁺

100.0%

α

0.1%

Decay Chain

¹⁷⁷IrIridium29.8 s

β⁺100.0%

α¹⁷³Re0.06%

¹⁷⁷OsOsmium3.00 min

β⁺100.0%

¹⁷⁷ReRhenium14.0 min

β⁺100.0%

¹⁷⁷WTungsten2.21 h

β⁺100.0%

¹⁷⁷TaTantalum2.35 d

β⁺100.0%

¹⁷⁷HfHafniumSTABLE

6-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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