Periodic Table/Zinc/⁵⁵Zn

← 54Zn56Zn →

⁵⁵Zn

Zinc-55

Radioactive· Half-life: 19.8 ms

Nuclear Propertiesbinding energy · spin-parity · abundance

Protons (Z)

30

Neutrons (N)

25

Mass Number (A)

55

Atomic Mass

54.984681AMU

Spin / Parity

5/2-

Binding E/A

7.625keV

Natural Abundance

Trace / None

Half-life

19.8 ms

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

β⁺

100.0%

β⁺p

91.0%

Decay Chain

⁵⁵ZnZinc19.8 ms

β⁺100.0%

β⁺p⁵⁴Ni91.0%

⁵⁵CuCopper55.9 ms

β⁺100.0%

β⁺p⁵⁴Co

⁵⁵NiNickel204 ms

β⁺100.0%

⁵⁵CoCobalt17.5 h

β⁺100.0%

⁵⁵FeIron2.76 y

EC100.0%

⁵⁵MnManganeseSTABLE

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

Other Isotopes of Zinc

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 85 86

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