Periodic Table/Iodine/¹³⁸I

← 137I139I →

¹³⁸I

Iodine-138

Radioactive· Half-life: 6.26 s

Nuclear Propertiesbinding energy · spin-parity · abundance

Protons (Z)

53

Neutrons (N)

85

Mass Number (A)

138

Atomic Mass

137.922726AMU

Spin / Parity

1-

Binding E/A

8.096keV

Natural Abundance

Trace / None

Half-life

6.26 s

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

β⁻

100.0%

β⁻n

5.3%

Decay Chain

¹³⁸IIodine6.26 s

β⁻100.0%

β⁻n¹³⁷Xe5.33%

¹³⁸XeXenon14.1 min

β⁻100.0%

¹³⁸CsCesium33.5 min

β⁻100.0%

¹³⁸BaBariumSTABLE

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

Other Isotopes of Iodine

106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147

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