Periodic Table/Praseodymium/¹²⁸Pr

← 127Pr129Pr →

¹²⁸Pr

Praseodymium-128

Radioactive· Half-life: 2.85 s

Nuclear Propertiesbinding energy · spin-parity · abundance

Protons (Z)

59

Neutrons (N)

69

Mass Number (A)

128

Atomic Mass

127.928791AMU

Spin / Parity

3+

Binding E/A

7.993keV

Natural Abundance

Trace / None

Half-life

2.85 s

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

β⁺

100.0%

β⁺p

Decay Chain

¹²⁸PrPraseodymium2.85 s

β⁺100.0%

β⁺p¹²⁷La

¹²⁸CeCerium3.93 min

β⁺100.0%

¹²⁸LaLanthanum5.18 min

β⁺100.0%

¹²⁸BaBarium2.43 d

EC100.0%

¹²⁸CsCesium3.64 min

β⁺100.0%

¹²⁸XeXenonSTABLE

6-step decay chain → stable · Primary path shown · branching ratios indicated

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