¹⁶⁴Ir — Unstable · t½ ≈ 70 ms · Decay: β⁺ → ¹⁶⁴Os · Type: synthetic · Uses: research.
¹⁶⁵Ir — Unstable · t½ ≈ 200 ms · Decay: β⁺ → ¹⁶⁵Os · Type: synthetic · Uses: research.
¹⁶⁶Ir — Unstable · t½ ≈ 700 ms · Decay: β⁺ → ¹⁶⁶Os · Type: synthetic · Uses: research.
¹⁶⁷Ir — Unstable · t½ ≈ 1.0 s · Decay: β⁺ → ¹⁶⁷Os · Type: synthetic · Uses: research.
¹⁶⁸Ir — Unstable · t½ ≈ 2.0 s · Decay: β⁺ → ¹⁶⁸Os · Type: synthetic · Uses: research.
¹⁶⁹Ir — Unstable · t½ ≈ 3.0 s · Decay: β⁺ → ¹⁶⁹Os · Type: synthetic · Uses: research.
¹⁷⁰Ir — Unstable · t½ ≈ 5.0 s · Decay: β⁺ → ¹⁷⁰Os · Type: synthetic · Uses: research.
¹⁷¹Ir — Unstable · t½ ≈ 5.0 s · Decay: β⁺ → ¹⁷¹Os · Type: synthetic · Uses: research.
¹⁷²Ir — Unstable · t½ ≈ 7.0 s · Decay: β⁺ → ¹⁷²Os · Type: synthetic · Uses: research.
¹⁷³Ir — Unstable · t½ ≈ 8.0 s · Decay: β⁺ → ¹⁷³Os · Type: synthetic · Uses: research.
¹⁷⁴Ir — Unstable · t½ ≈ 12.0 s · Decay: β⁺ → ¹⁷⁴Os · Type: synthetic · Uses: research.
¹⁷⁵Ir — Unstable · t½ ≈ 14.0 s · Decay: β⁺ → ¹⁷⁵Os · Type: synthetic · Uses: research.
¹⁷⁶Ir — Unstable · t½ ≈ 9.0 s · Decay: β⁺ → ¹⁷⁶Os · Type: synthetic · Uses: research.
¹⁷⁷Ir — Unstable · t½ ≈ 14.0 s · Decay: β⁺ → ¹⁷⁷Os · Type: synthetic · Uses: research.
¹⁷⁸Ir — Unstable · t½ ≈ 12.0 s · Decay: β⁺ → ¹⁷⁸Os · Type: synthetic · Uses: research.
¹⁷⁹Ir — Unstable · t½ ≈ 12.0 s · Decay: β⁺ → ¹⁷⁹Os · Type: synthetic · Uses: research.
¹⁸⁰Ir — Unstable · t½ ≈ 1.5 min · Decay: β⁺ → ¹⁸⁰Os · Type: synthetic · Uses: research.
¹⁸¹Ir — Unstable · t½ ≈ 3.0 min · Decay: β⁺ → ¹⁸¹Os · Type: synthetic · Uses: research.
¹⁸²Ir — Unstable · t½ ≈ 15.0 min · Decay: β⁺ → ¹⁸²Os · Type: synthetic · Uses: research.
¹⁸³Ir — Unstable · t½ ≈ 58.0 min · Decay: β⁻ → ¹⁸³Pt · Type: synthetic · Uses: research.
¹⁸⁴Ir — Unstable · t½ ≈ 3.1 h · Decay: β⁻ → ¹⁸⁴Pt · Type: synthetic · Uses: research.
¹⁸⁵Ir — Unstable · t½ ≈ 2.0 h · Decay: β⁻ → ¹⁸⁵Pt · Type: synthetic · Uses: research.
¹⁸⁶Ir — Unstable · t½ ≈ 16.6 h · Decay: β⁻ → ¹⁸⁶Pt · Type: tracer · Uses: nuclear research.
¹⁸⁷Ir — Unstable · t½ ≈ 10.5 h · Decay: β⁻ → ¹⁸⁷Pt · Type: tracer · Uses: nuclear research.
¹⁸⁸Ir — Unstable · t½ ≈ 41.5 h · Decay: β⁻ → ¹⁸⁸Pt · Type: tracer · Uses: nuclear physics.
¹⁸⁹Ir — Unstable · t½ ≈ 13.2 d · Decay: β⁻ → ¹⁸⁹Pt · Type: tracer · Uses: nuclear research.
¹⁹⁰Ir — Unstable · t½ ≈ 11.8 d · Decay: β⁻ → ¹⁹⁰Pt · Type: tracer · Uses: nuclear physics.
¹⁹¹Ir — Stable · — · Type: stable (primordial, ~37.3%) · Uses: isotope tracer, alloys, industrial catalysts.
¹⁹²Ir — Unstable · t½ ≈ 73.8 d · Decay: β⁻ → ¹⁹²Pt · Type: medical isotope · Uses: brachytherapy, radiography.
¹⁹³Ir — Unstable · t½ ≈ 10.5 d · Decay: β⁻ → ¹⁹³Pt · Type: tracer · Uses: research.
¹⁹⁴Ir — Unstable · t½ ≈ 19.5 h · Decay: β⁻ → ¹⁹⁴Pt · Type: tracer · Uses: nuclear research.
¹⁹⁵Ir — Unstable · t½ ≈ 2.5 h · Decay: β⁻ → ¹⁹⁵Pt · Type: synthetic · Uses: research.
¹⁹⁶Ir — Unstable · t½ ≈ 53.0 s · Decay: β⁻ → ¹⁹⁶Pt · Type: synthetic · Uses: research.
¹⁹⁷Ir — Unstable · t½ ≈ 5.0 s · Decay: β⁻ → ¹⁹⁷Pt · Type: synthetic · Uses: research.
Iridium — isotope count: 34 total · Stable: 2 (¹⁹¹Ir, ¹⁹³Ir) · Unstable: 32.
(Data: IAEA LiveChart, NUBASE2020, ENSDF; notable applications: ¹⁹²Ir in brachytherapy and industrial radiography, stable Ir isotopes in alloys, catalysts, and geochemistry.)