Periodic Table/Praseodymium/¹²¹Pr

122Pr →

¹²¹Pr

Praseodymium-121

Radioactive· Half-life: 12.0 ms

Nuclear Propertiesbinding energy · spin-parity · abundance

Protons (Z)

59

Neutrons (N)

62

Mass Number (A)

121

Atomic Mass

120.955393AMU

Spin / Parity

3/2

Binding E/A

7.784keV

Natural Abundance

Trace / None

Half-life

12.0 ms

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

p

100.0%

Decay Chain

¹²¹PrPraseodymium12.0 ms

p100.0%

¹²⁰CeCerium?

β⁺

β⁺p¹¹⁹Ba

¹²⁰LaLanthanum2.80 s

β⁺100.0%

β⁺p¹¹⁹Cs

¹²⁰BaBarium24.0 s

β⁺100.0%

¹²⁰CsCesium1.01 min

β⁺100.0%

β⁺p¹¹⁹I7.00%

β⁺α¹¹⁶Te2.00%

¹²⁰XeXenon46.0 min

β⁺100.0%

¹²⁰IIodine1.36 h

β⁺100.0%

¹²⁰TeTelluriumSTABLE

8-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