Periodic Table/Praseodymium/¹²⁹Pr

← 128Pr130Pr →

¹²⁹Pr

Praseodymium-129

Radioactive· Half-life: 30.0 s

Nuclear Propertiesbinding energy · spin-parity · abundance

Protons (Z)

59

Neutrons (N)

70

Mass Number (A)

129

Atomic Mass

128.925095AMU

Spin / Parity

3/2+

Binding E/A

8.021keV

Natural Abundance

Trace / None

Half-life

30.0 s

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

β⁺

100.0%

Decay Chain

¹²⁹PrPraseodymium30.0 s

β⁺100.0%

¹²⁹CeCerium3.50 min

β⁺100.0%

¹²⁹LaLanthanum11.6 min

β⁺100.0%

¹²⁹BaBarium2.23 h

β⁺100.0%

¹²⁹CsCesium1.34 d

β⁺100.0%

¹²⁹XeXenonSTABLE

6-step decay chain → stable · Primary path shown

Other Isotopes of Praseodymium

121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161

← Back to PraseodymiumData: IAEA NDS · ENSDF