²⁶³Hs — Unstable · t½ ≈ 0.74 ms · Decay: α → ²⁵⁹Sg · Type: synthetic · Uses: research.
²⁶⁴Hs — Unstable · t½ ≈ 0.8 ms · Decay: α → ²⁶⁰Sg · Type: synthetic · Uses: research.
²⁶⁵Hs — Unstable · t½ ≈ 2.0 ms · Decay: α → ²⁶¹Sg · Type: synthetic · Uses: research.
²⁶⁶Hs — Unstable · t½ ≈ 2.3 ms · Decay: α → ²⁶²Sg · Type: synthetic · Uses: research.
²⁶⁷Hs — Unstable · t½ ≈ 52.0 ms · Decay: α → ²⁶³Sg · Type: synthetic · Uses: research.
²⁶⁸Hs — Unstable · t½ ≈ 0.9 s · Decay: α → ²⁶⁴Sg · Type: synthetic · Uses: research.
²⁶⁹Hs — Unstable · t½ ≈ 9.7 s · Decay: α → ²⁶⁵Sg · Type: synthetic · Uses: research.
²⁷⁰Hs — Unstable · t½ ≈ 22.0 s · Decay: α → ²⁶⁶Sg · Type: synthetic · Uses: research.
²⁷¹Hs — Unstable · t½ ≈ 3.6 ms · Decay: α → ²⁶⁷Sg · Type: synthetic · Uses: research.
²⁷²Hs — Unstable · t½ ≈ 9.7 s · Decay: α → ²⁶⁸Sg · Type: synthetic · Uses: research.
²⁷³Hs — Unstable · t½ ≈ 0.7 s · Decay: α → ²⁶⁹Sg · Type: synthetic · Uses: research.
²⁷⁴Hs — Unstable · t½ ≈ 0.3 s · Decay: α → ²⁷⁰Sg · Type: synthetic · Uses: research.
²⁷⁵Hs — Unstable · t½ ≈ 0.15 s · Decay: α → ²⁷¹Sg · Type: synthetic · Uses: research.
²⁷⁶Hs — Unstable · t½ ≈ 0.13 s · Decay: α → ²⁷²Sg · Type: synthetic · Uses: research.
²⁷⁷Hs — Unstable · t½ ≈ 11.0 ms · Decay: α → ²⁷³Sg · Type: synthetic · Uses: research.
Hassium — isotope count: 15 total · Stable: none · Unstable: 15.
(Data: IAEA LiveChart, NUBASE2020, ENSDF, Wikipedia “Isotopes of hassium.” Notable applications: all isotopes are synthetic, very short-lived; ²⁷⁰Hs studied for its relatively long half-life in superheavy element research.)
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