Periodic Table/Iodine/¹²³I

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¹²³I

Iodine-123

Radioactive· Half-life: 13.2 h

Nuclear Propertiesbinding energy · spin-parity · abundance

Protons (Z)

53

Neutrons (N)

70

Mass Number (A)

123

Atomic Mass

122.905590AMU

Spin / Parity

5/2+

Binding E/A

8.229keV

Natural Abundance

Trace / None

Half-life

13.2 h

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

β⁺

100.0%

Decay Chain

¹²³IIodine13.2 h

β⁺100.0%

¹²³TeTelluriumSTABLE

2-step decay chain → stable · Primary path shown

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

Medical Applications

DiagnosticI-123

Thyroid imaging and uptake studies

View all radiopharmaceuticals →

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