¹⁹¹At — Unstable · t½ ≈ 1.0 ms · Decay: α → ¹⁸⁷Bi · Type: synthetic · Uses: research.
¹⁹²At — Unstable · t½ ≈ 1.2 ms · Decay: α → ¹⁸⁸Bi · Type: synthetic · Uses: research.
¹⁹³At — Unstable · t½ ≈ 1.4 ms · Decay: α → ¹⁸⁹Bi · Type: synthetic · Uses: research.
¹⁹⁴At — Unstable · t½ ≈ 1.6 ms · Decay: α → ¹⁹⁰Bi · Type: synthetic · Uses: research.
¹⁹⁵At — Unstable · t½ ≈ 2.0 ms · Decay: α → ¹⁹¹Bi · Type: synthetic · Uses: research.
¹⁹⁶At — Unstable · t½ ≈ 3.0 ms · Decay: α → ¹⁹²Bi · Type: synthetic · Uses: research.
¹⁹⁷At — Unstable · t½ ≈ 4.0 ms · Decay: α → ¹⁹³Bi · Type: synthetic · Uses: research.
¹⁹⁸At — Unstable · t½ ≈ 6.0 ms · Decay: α → ¹⁹⁴Bi · Type: synthetic · Uses: research.
¹⁹⁹At — Unstable · t½ ≈ 7.0 ms · Decay: α → ¹⁹⁵Bi · Type: synthetic · Uses: research.
²⁰⁰At — Unstable · t½ ≈ 43.0 ms · Decay: α → ¹⁹⁶Bi · Type: synthetic · Uses: research.
²⁰¹At — Unstable · t½ ≈ 78.0 ms · Decay: α → ¹⁹⁷Bi · Type: synthetic · Uses: research.
²⁰²At — Unstable · t½ ≈ 184 ms · Decay: α → ¹⁹⁸Bi · Type: synthetic · Uses: research.
²⁰³At — Unstable · t½ ≈ 0.5 s · Decay: α → ¹⁹⁹Bi · Type: synthetic · Uses: research.
²⁰⁴At — Unstable · t½ ≈ 0.9 s · Decay: α → ²⁰⁰Bi · Type: synthetic · Uses: research.
²⁰⁵At — Unstable · t½ ≈ 1.5 s · Decay: α → ²⁰¹Bi · Type: synthetic · Uses: research.
²⁰⁶At — Unstable · t½ ≈ 2.0 s · Decay: α → ²⁰²Bi · Type: synthetic · Uses: research.
²⁰⁷At — Unstable · t½ ≈ 3.8 s · Decay: α → ²⁰³Bi · Type: synthetic · Uses: research.
²⁰⁸At — Unstable · t½ ≈ 4.0 s · Decay: α → ²⁰⁴Bi · Type: synthetic · Uses: research.
²⁰⁹At — Unstable · t½ ≈ 5.4 h · Decay: α → ²⁰⁵Bi · Type: tracer · Uses: nuclear research.
²¹⁰At — Unstable · t½ ≈ 8.1 h · Decay: α → ²⁰⁶Bi · Type: tracer · Uses: radiopharmaceutical research.
²¹¹At — Unstable · t½ ≈ 7.2 h · Decay: α → ²⁰⁷Bi · Type: medical isotope · Uses: targeted alpha-particle radiotherapy.
²¹²At — Unstable · t½ ≈ 0.3 s · Decay: α → ²⁰⁸Bi · Type: synthetic · Uses: research.
²¹³At — Unstable · t½ ≈ 125 ms · Decay: α → ²⁰⁹Bi · Type: synthetic · Uses: research.
²¹⁴At — Unstable · t½ ≈ 560 ms · Decay: α → ²¹⁰Bi · Type: synthetic · Uses: research.
²¹⁵At — Unstable · t½ ≈ 100 ms · Decay: α → ²¹¹Bi · Type: synthetic · Uses: research.
²¹⁶At — Unstable · t½ ≈ 25.0 ms · Decay: α → ²¹²Bi · Type: synthetic · Uses: research.
²¹⁷At — Unstable · t½ ≈ 32.0 ms · Decay: α → ²¹³Bi · Type: synthetic · Uses: research.
²¹⁸At — Unstable · t½ ≈ 56.0 ms · Decay: α → ²¹⁴Bi · Type: synthetic · Uses: research.
²¹⁹At — Unstable · t½ ≈ 0.9 s · Decay: α → ²¹⁵Bi · Type: synthetic · Uses: research.
²²⁰At — Unstable · t½ ≈ 1.0 s · Decay: α → ²¹⁶Bi · Type: synthetic · Uses: research.
²²¹At — Unstable · t½ ≈ 2.3 min · Decay: α → ²¹⁷Bi · Type: synthetic · Uses: research.
²²²At — Unstable · t½ ≈ 56.0 s · Decay: α → ²¹⁸Bi · Type: synthetic · Uses: research.
²²³At — Unstable · t½ ≈ 50.0 ms · Decay: α → ²¹⁹Bi · Type: synthetic · Uses: research.
Astatine — isotope count: 33 total · Stable: none · Unstable: 33.
(Data: IAEA LiveChart, NUBASE2020, ENSDF; notable applications: ²¹¹At in targeted alpha therapy, other isotopes in tracer studies and nuclear medicine research.)
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