Periodic Table/Selenium/⁸⁹Se

← 88Se90Se →

⁸⁹Se

Selenium-89

Radioactive· Half-life: 430 ms

Nuclear Propertiesbinding energy · spin-parity · abundance

Protons (Z)

34

Neutrons (N)

55

Mass Number (A)

89

Atomic Mass

88.936669AMU

Spin / Parity

5/2+

Binding E/A

8.240keV

Natural Abundance

Trace / None

Half-life

430 ms

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

β⁻

100.0%

β⁻n

7.8%

Decay Chain

⁸⁹SeSelenium430 ms

β⁻100.0%

β⁻n⁸⁸Br7.80%

⁸⁹BrBromine4.36 s

β⁻100.0%

β⁻n⁸⁸Kr13.8%

⁸⁹KrKrypton3.15 min

β⁻100.0%

⁸⁹RbRubidium15.3 min

β⁻100.0%

⁸⁹SrStrontium50.6 d

β⁻100.0%

⁸⁹YYttriumSTABLE

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

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

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