Periodic Table/Tin/¹³⁹Sn

← 138Sn140Sn →

¹³⁹Sn

Tin-139

Radioactive· Half-life: 120 ms

Nuclear Propertiesbinding energy · spin-parity · abundance

Protons (Z)

50

Neutrons (N)

89

Mass Number (A)

139

Atomic Mass

138.957799AMU

Spin / Parity

5/2-

Binding E/A

7.889keV

Natural Abundance

Trace / None

Half-life

120 ms

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

β⁻

100.0%

β⁻n

2n

Decay Chain

¹³⁹SnTin120 ms

β⁻100.0%

β⁻n¹³⁸Sb

2n¹³⁷Sn

¹³⁹SbAntimony182 ms

β⁻100.0%

β⁻n¹³⁸Te90.0%

2n¹³⁷Sb

¹³⁹TeTellurium724 ms

β⁻100.0%

β⁻n¹³⁸I

¹³⁹IIodine2.28 s

β⁻100.0%

β⁻n¹³⁸Xe9.74%

¹³⁹XeXenon39.7 s

β⁻100.0%

¹³⁹CsCesium9.27 min

β⁻100.0%

¹³⁹BaBarium1.38 h

β⁻100.0%

¹³⁹LaLanthanumSTABLE

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

Other Isotopes of Tin

99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140

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