Periodic Table/Promethium/143Pm
← 142Pm144Pm →
143Pm

Promethium-143

Radioactive· Half-life: 265 d

Nuclear Propertiesbinding energy · spin-parity · abundance

Protons (Z)

61

Neutrons (N)

82

Mass Number (A)

143

Atomic Mass

142.910938AMU

Spin / Parity

5/2+

Binding E/A

8.100keV

Natural Abundance

Trace / None

Half-life

265 d

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

EC
100.0%
e+
5.7%

Decay Chain

143PmPromethium265 d
EC100.0%
e+143Nd5.70%
143NdNeodymiumSTABLE

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

Other Isotopes of Promethium

126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165
← Back to PromethiumData: IAEA NDS · ENSDF