Periodic Table/Indium/¹²¹In

← 120In122In →

¹²¹In

Indium-121

Radioactive· Half-life: 23.1 s

Nuclear Propertiesbinding energy · spin-parity · abundance

Protons (Z)

49

Neutrons (N)

72

Mass Number (A)

121

Atomic Mass

120.907853AMU

Spin / Parity

9/2+

Binding E/A

8.257keV

Natural Abundance

Trace / None

Half-life

23.1 s

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

β⁻

100.0%

Decay Chain

¹²¹InIndium23.1 s

β⁻100.0%

¹²¹SnTin1.13 d

β⁻100.0%

¹²¹SbAntimonySTABLE

3-step decay chain → stable · Primary path shown

Other Isotopes of Indium

96 97 98 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

← Back to IndiumData: IAEA NDS · ENSDF