Bohrium (Z = 107, A = 260–274)

²⁶⁰Bh — Unstable · t½ ≈ 35 ms · Decay: α → ²⁵⁶Db · Type: synthetic · Uses: research.
²⁶¹Bh — Unstable · t½ ≈ 11 ms · Decay: α → ²⁵⁷Db · Type: synthetic · Uses: research.
²⁶²Bh — Unstable · t½ ≈ 84 ms · Decay: α → ²⁵⁸Db · Type: synthetic · Uses: research.
²⁶³Bh — Unstable · t½ ≈ 0.5 s · Decay: α → ²⁵⁹Db · Type: synthetic · Uses: research.
²⁶⁴Bh — Unstable · t½ ≈ 0.9 s · Decay: α → ²⁶⁰Db · Type: synthetic · Uses: research.
²⁶⁵Bh — Unstable · t½ ≈ 0.9 s · Decay: α → ²⁶¹Db · Type: synthetic · Uses: research.
²⁶⁶Bh — Unstable · t½ ≈ 1.0 s · Decay: α → ²⁶²Db · Type: synthetic · Uses: research.
²⁶⁷Bh — Unstable · t½ ≈ 17.0 s · Decay: α → ²⁶³Db · Type: synthetic · Uses: research.
²⁶⁸Bh — Unstable · t½ ≈ 46.0 s · Decay: α → ²⁶⁴Db · Type: synthetic · Uses: research.
²⁶⁹Bh — Unstable · t½ ≈ 1.0 min · Decay: α → ²⁶⁵Db · Type: synthetic · Uses: research.
²⁷⁰Bh — Unstable · t½ ≈ 61.0 s · Decay: α → ²⁶⁶Db · Type: synthetic · Uses: research.
²⁷¹Bh — Unstable · t½ ≈ 1.5 min · Decay: α → ²⁶⁷Db · Type: synthetic · Uses: research.
²⁷²Bh — Unstable · t½ ≈ 9.8 s · Decay: α → ²⁶⁸Db · Type: synthetic · Uses: research.
²⁷³Bh — Unstable · t½ ≈ 1.0 min · Decay: α → ²⁶⁹Db · Type: synthetic · Uses: research.
²⁷⁴Bh — Unstable · t½ ≈ 30.0 s · Decay: α → ²⁷⁰Db · Type: synthetic · Uses: research.

Bohrium — isotope count: 15 total · Stable: none · Unstable: 15.
(Data: IAEA LiveChart, NUBASE2020, ENSDF, Wikipedia “Isotopes of bohrium.” Notable applications: all isotopes are synthetic, short-lived, and studied only in heavy element research.)

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