Periodic Table/Arsenic/⁹⁰As

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⁹⁰As

Arsenic-90

Radioactive

Nuclear Propertiesbinding energy · spin-parity · abundance

Protons (Z)

33

Neutrons (N)

57

Mass Number (A)

90

Atomic Mass

89.955995AMU

Spin / Parity

—

Binding E/A

8.053keV

Natural Abundance

Trace / None

Half-life

Unknown

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

β⁻

β⁻n

2n

Decay Chain

⁹⁰AsArsenic?

β⁻

β⁻n⁸⁹Se

2n⁸⁸As

⁹⁰SeSelenium210 ms

β⁻100.0%

β⁻n⁸⁹Br

⁹⁰BrBromine1.91 s

β⁻100.0%

β⁻n⁸⁹Kr25.3%

⁹⁰KrKrypton32.3 s

β⁻100.0%

⁹⁰RbRubidium2.63 min

β⁻100.0%

⁹⁰SrStrontium28.9 y

β⁻100.0%

⁹⁰YYttrium2.67 d

β⁻100.0%

⁹⁰ZrZirconiumSTABLE

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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