⁶⁰As — Unstable · t½ ≈ 0.3 s · Decay: β⁺ → ⁶⁰Ge · Type: synthetic · Uses: research.
⁶¹As — Unstable · t½ ≈ 0.6 s · Decay: β⁺ → ⁶¹Ge · Type: synthetic · Uses: research.
⁶²As — Unstable · t½ ≈ 0.9 s · Decay: β⁺ → ⁶²Ge · Type: synthetic · Uses: research.
⁶³As — Unstable · t½ ≈ 0.8 s · Decay: β⁺ → ⁶³Ge · Type: synthetic · Uses: research.
⁶⁴As — Unstable · t½ ≈ 2.0 s · Decay: β⁺ → ⁶⁴Ge · Type: synthetic · Uses: research.
⁶⁵As — Unstable · t½ ≈ 0.1 s · Decay: β⁺ → ⁶⁵Ge · Type: synthetic · Uses: research.
⁶⁶As — Unstable · t½ ≈ 0.09 s · Decay: β⁺ → ⁶⁶Ge · Type: synthetic · Uses: research.
⁶⁷As — Unstable · t½ ≈ 1.5 s · Decay: β⁺ → ⁶⁷Ge · Type: synthetic · Uses: research.
⁶⁸As — Unstable · t½ ≈ 2.5 min · Decay: β⁺ → ⁶⁸Ge · Type: activation product · Uses: tracer.
⁶⁹As — Unstable · t½ ≈ 15.2 min · Decay: β⁺ → ⁶⁹Ge · Type: activation · Uses: tracer.
⁷⁰As — Unstable · t½ ≈ 52.6 min · Decay: β⁻ → ⁷⁰Se · Type: activation · Uses: research.
⁷¹As — Unstable · t½ ≈ 65.3 h · Decay: β⁻ → ⁷¹Se · Type: activation · Uses: research.
⁷²As — Unstable · t½ ≈ 26.0 h · Decay: β⁻ → ⁷²Se · Type: activation · Uses: research.
⁷³As — Unstable · t½ ≈ 80.3 d · Decay: β⁻ → ⁷³Se · Type: activation product · Uses: tracer.
⁷⁴As — Unstable · t½ ≈ 17.8 d · Decay: β⁻ → ⁷⁴Se · Type: activation · Uses: tracer.
⁷⁵As — Stable · — · Type: stable (primordial) · Uses: metalloid chemistry, semiconductor devices (GaAs).
⁷⁶As — Unstable · t½ ≈ 26.3 h · Decay: β⁻ → ⁷⁶Se · Type: activation · Uses: tracer.
⁷⁷As — Unstable · t½ ≈ 38.8 h · Decay: β⁻ → ⁷⁷Se · Type: activation · Uses: tracer.
⁷⁸As — Unstable · t½ ≈ 90.7 min · Decay: β⁻ → ⁷⁸Se · Type: synthetic · Uses: research.
⁷⁹As — Unstable · t½ ≈ 9.01 min · Decay: β⁻ → ⁷⁹Se · Type: synthetic · Uses: research.
⁸⁰As — Unstable · t½ ≈ 15.2 s · Decay: β⁻ → ⁸⁰Se · Type: synthetic · Uses: research.
⁸¹As — Unstable · t½ ≈ 33.3 s · Decay: β⁻ → ⁸¹Se · Type: synthetic · Uses: research.
⁸²As — Unstable · t½ ≈ 19.1 s · Decay: β⁻ → ⁸²Se · Type: synthetic · Uses: research.
⁸³As — Unstable · t½ ≈ 13.4 s · Decay: β⁻ → ⁸³Se · Type: synthetic · Uses: research.
⁸⁴As — Unstable · t½ ≈ 4.5 s · Decay: β⁻ → ⁸⁴Se · Type: synthetic · Uses: research.
⁸⁵As — Unstable · t½ ≈ 2.0 s · Decay: β⁻ → ⁸⁵Se · Type: synthetic · Uses: research.
⁸⁶As — Unstable · t½ ≈ 0.9 s · Decay: β⁻ → ⁸⁶Se · Type: synthetic · Uses: research.
⁸⁷As — Unstable · t½ ≈ 0.6 s · Decay: β⁻ → ⁸⁷Se · Type: synthetic · Uses: research.
⁸⁸As — Unstable · t½ ≈ 0.5 s · Decay: β⁻ → ⁸⁸Se · Type: synthetic · Uses: research.
⁸⁹As — Unstable · t½ ≈ 250 ms · Decay: β⁻ → ⁸⁹Se · Type: synthetic · Uses: research.
⁹⁰As — Unstable · t½ ≈ 200 ms · Decay: β⁻ → ⁹⁰Se · Type: synthetic · Uses: research.
⁹¹As — Unstable · t½ ≈ 130 ms · Decay: β⁻ → ⁹¹Se · Type: synthetic · Uses: research.
⁹²As — Unstable · t½ ≈ 100 ms · Decay: β⁻ → ⁹²Se · Type: synthetic · Uses: research.

Arsenic — isotope count: 33 total · Stable: 1 (⁷⁵As) · Unstable: 32.
(Values compiled from IAEA LiveChart, NUBASE2020, ENSDF; notable uses include ⁶⁷Ga and ⁶⁸Ga in imaging via daughter isotopes, while ⁷⁵As is the industrial stable nuclide.)