Periodic Table/Arsenic/⁸¹As

← 80As82As →

⁸¹As

Arsenic-81

Radioactive· Half-life: 33.3 s

Nuclear Propertiesbinding energy · spin-parity · abundance

Protons (Z)

33

Neutrons (N)

48

Mass Number (A)

81

Atomic Mass

80.922132AMU

Spin / Parity

3/2-

Binding E/A

8.440keV

Natural Abundance

Trace / None

Half-life

33.3 s

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

β⁻

100.0%

Decay Chain

⁸¹AsArsenic33.3 s

β⁻100.0%

⁸¹SeSelenium18.4 min

β⁻100.0%

⁸¹BrBromineSTABLE

3-step decay chain → stable · Primary path shown

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

← Back to ArsenicData: IAEA NDS · ENSDF