Periodic Table/Promethium/¹⁴²Pm

← 141Pm143Pm →

¹⁴²Pm

Promethium-142

Radioactive· Half-life: 40.5 s

Nuclear Propertiesbinding energy · spin-parity · abundance

Protons (Z)

61

Neutrons (N)

81

Mass Number (A)

142

Atomic Mass

141.912891AMU

Spin / Parity

1+

Binding E/A

8.087keV

Natural Abundance

Trace / None

Half-life

40.5 s

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

β⁺

100.0%

e+

77.1%

EC

22.9%

Decay Chain

¹⁴²PmPromethium40.5 s

β⁺100.0%

e+¹⁴²Nd77.1%

EC¹⁴²Nd22.9%

¹⁴²NdNeodymiumSTABLE

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

Other Isotopes of Promethium

126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165

← Back to PromethiumData: IAEA NDS · ENSDF