Periodic Table/Copper/⁸¹Cu

← 80Cu82Cu →

⁸¹Cu

Copper-81

Radioactive· Half-life: 73.2 ms

Nuclear Propertiesbinding energy · spin-parity · abundance

Protons (Z)

29

Neutrons (N)

52

Mass Number (A)

81

Atomic Mass

80.965743AMU

Spin / Parity

5/2-

Binding E/A

8.002keV

Natural Abundance

Trace / None

Half-life

73.2 ms

Decay Modesoverview · half-life · α · β⁻ · β⁺

β⁻

100.0%

β⁻n

81.0%

2n

Decay Chain

⁸¹CuCopper73.2 ms

β⁻100.0%

β⁻n⁸⁰Zn81.0%

2n⁷⁹Cu

⁸¹ZnZinc299 ms

β⁻100.0%

β⁻n⁸⁰Ga23.0%

2n⁷⁹Zn

⁸¹GaGallium1.22 s

β⁻100.0%

β⁻n⁸⁰Ge12.5%

⁸¹GeGermanium9.00 s

β⁻100.0%

⁸¹AsArsenic33.3 s

β⁻100.0%

⁸¹SeSelenium18.4 min

β⁻100.0%

⁸¹BrBromineSTABLE

7-step decay chain → stable · Primary path shown · branching ratios indicated

Other Isotopes of Copper

52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84

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