Periodic Table/Cesium/129Cs
← 128Cs130Cs →
129Cs

Cesium-129

Radioactive· Half-life: 1.34 d

Nuclear Propertiesbinding energy · spin-parity · abundance

Protons (Z)

55

Neutrons (N)

74

Mass Number (A)

129

Atomic Mass

128.906066AMU

Spin / Parity

1/2+

Binding E/A

8.198keV

Natural Abundance

Trace / None

Half-life

1.34 d

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

β⁺
100.0%

Decay Chain

129CsCesium1.34 d
β⁺100.0%
129XeXenonSTABLE

2-step decay chain → stable · Primary path shown

Other Isotopes of Cesium

111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152
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