Periodic Table/Arsenic/⁹¹As

← 90As92As →

⁹¹As

Arsenic-91

Radioactive

Nuclear Propertiesbinding energy · spin-parity · abundance

Protons (Z)

33

Neutrons (N)

58

Mass Number (A)

91

Atomic Mass

90.960816AMU

Spin / Parity

5/2-

Binding E/A

8.003keV

Natural Abundance

Trace / None

Half-life

Unknown

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

β⁻

β⁻n

2n

Decay Chain

⁹¹AsArsenic?

β⁻

β⁻n⁹⁰Se

2n⁸⁹As

⁹¹SeSelenium270 ms

β⁻100.0%

β⁻n⁹⁰Br21.0%

2n⁸⁹Se

⁹¹BrBromine543 ms

β⁻100.0%

β⁻n⁹⁰Kr29.5%

⁹¹KrKrypton8.57 s

β⁻100.0%

β⁻n⁹⁰Rb

⁹¹RbRubidium58.2 s

β⁻100.0%

β⁻n⁹⁰Sr

⁹¹SrStrontium9.65 h

β⁻100.0%

⁹¹YYttrium58.5 d

β⁻100.0%

⁹¹ZrZirconiumSTABLE

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

Other Isotopes of Arsenic

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 87 88 89 90 91 92

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