Periodic Table/Cesium/¹²⁰Cs

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¹²⁰Cs

Cesium-120

Radioactive· Half-life: 1.01 min

Nuclear Propertiesbinding energy · spin-parity · abundance

Protons (Z)

55

Neutrons (N)

65

Mass Number (A)

120

Atomic Mass

119.920677AMU

Spin / Parity

2+

Binding E/A

8.094keV

Natural Abundance

Trace / None

Half-life

1.01 min

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

β⁺

100.0%

β⁺α

2.0%

β⁺p

7.0%

Decay Chain

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

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

Other Isotopes of Cesium

111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152

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