Periodic Table/Promethium/¹³⁵Pm

← 134Pm136Pm →

¹³⁵Pm

Promethium-135

Radioactive· Half-life: 49.0 s

Nuclear Propertiesbinding energy · spin-parity · abundance

Protons (Z)

61

Neutrons (N)

74

Mass Number (A)

135

Atomic Mass

134.924785AMU

Spin / Parity

3/2+

Binding E/A

8.006keV

Natural Abundance

Trace / None

Half-life

49.0 s

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

β⁺

100.0%

Decay Chain

¹³⁵PmPromethium49.0 s

β⁺100.0%

¹³⁵NdNeodymium12.4 min

β⁺100.0%

¹³⁵PrPraseodymium24.0 min

β⁺100.0%

¹³⁵CeCerium17.7 h

β⁺100.0%

¹³⁵LaLanthanum18.9 h

β⁺100.0%

¹³⁵BaBariumSTABLE

6-step decay chain → stable · Primary path shown

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