Periodic Table/Selenium/⁸⁵Se

← 84Se86Se →

⁸⁵Se

Selenium-85

Radioactive· Half-life: 32.9 s

Nuclear Propertiesbinding energy · spin-parity · abundance

Protons (Z)

34

Neutrons (N)

51

Mass Number (A)

85

Atomic Mass

84.922261AMU

Spin / Parity

5/2

Binding E/A

8.406keV

Natural Abundance

Trace / None

Half-life

32.9 s

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

β⁻

100.0%

Decay Chain

⁸⁵SeSelenium32.9 s

β⁻100.0%

⁸⁵BrBromine2.90 min

β⁻100.0%

⁸⁵KrKrypton10.7 y

β⁻100.0%

⁸⁵RbRubidiumSTABLE

4-step decay chain → stable · Primary path shown

Other Isotopes of Selenium

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 93 94 95

← Back to SeleniumData: IAEA NDS · ENSDF