Periodic Table/Antimony/¹²⁹Sb

← 128Sb130Sb →

¹²⁹Sb

Antimony-129

Radioactive· Half-life: 4.37 h

Nuclear Propertiesbinding energy · spin-parity · abundance

Protons (Z)

51

Neutrons (N)

78

Mass Number (A)

129

Atomic Mass

128.909147AMU

Spin / Parity

7/2+

Binding E/A

8.216keV

Natural Abundance

Trace / None

Half-life

4.37 h

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

β⁻

100.0%

Decay Chain

¹²⁹SbAntimony4.37 h

β⁻100.0%

¹²⁹TeTellurium1.16 h

β⁻100.0%

¹²⁹IIodine16.1 My

β⁻100.0%

¹²⁹XeXenonSTABLE

4-step decay chain → stable · Primary path shown

Other Isotopes of Antimony

102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142

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