Periodic Table/Lanthanum/¹²⁰La

← 119La121La →

¹²⁰La

Lanthanum-120

Radioactive· Half-life: 2.80 s

Nuclear Propertiesbinding energy · spin-parity · abundance

Protons (Z)

57

Neutrons (N)

63

Mass Number (A)

120

Atomic Mass

119.938196AMU

Spin / Parity

1-

Binding E/A

7.937keV

Natural Abundance

Trace / None

Half-life

2.80 s

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

β⁺

100.0%

β⁺p

Decay Chain

¹²⁰LaLanthanum2.80 s

β⁺100.0%

β⁺p¹¹⁹Cs

¹²⁰BaBarium24.0 s

β⁺100.0%

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

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

Other Isotopes of Lanthanum

116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157

← Back to LanthanumData: IAEA NDS · ENSDF