Periodic Table/Barium/¹²⁹Ba

← 128Ba130Ba →

¹²⁹Ba

Barium-129

Radioactive· Half-life: 2.23 h

Nuclear Propertiesbinding energy · spin-parity · abundance

Protons (Z)

56

Neutrons (N)

73

Mass Number (A)

129

Atomic Mass

128.908683AMU

Spin / Parity

1/2+

Binding E/A

8.169keV

Natural Abundance

Trace / None

Half-life

2.23 h

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

β⁺

100.0%

Decay Chain

¹²⁹BaBarium2.23 h

β⁺100.0%

¹²⁹CsCesium1.34 d

β⁺100.0%

¹²⁹XeXenonSTABLE

3-step decay chain → stable · Primary path shown

Other Isotopes of Barium

113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154

← Back to BariumData: IAEA NDS · ENSDF