Periodic Table/Iridium/²⁰⁵Ir

← 204Ir

²⁰⁵Ir

Iridium-205

Radioactive

Nuclear Propertiesbinding energy · spin-parity · abundance

Protons (Z)

77

Neutrons (N)

128

Mass Number (A)

205

Atomic Mass

204.993988AMU

Spin / Parity

3/2+

Binding E/A

7.613keV

Natural Abundance

Trace / None

Half-life

Unknown

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

β⁻

β⁻n

Decay Chain

²⁰⁵IrIridium?

β⁻

β⁻n²⁰⁴Pt

²⁰⁵PtPlatinum?

β⁻

²⁰⁵AuGold32.0 s

β⁻100.0%

²⁰⁵HgMercury5.14 min

β⁻100.0%

²⁰⁵TlThalliumSTABLE

5-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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