Periodic Table/Lanthanum/¹²³La

← 122La124La →

¹²³La

Lanthanum-123

Radioactive· Half-life: 17.0 s

Nuclear Propertiesbinding energy · spin-parity · abundance

Protons (Z)

57

Neutrons (N)

66

Mass Number (A)

123

Atomic Mass

122.926300AMU

Spin / Parity

11/2-

Binding E/A

8.030keV

Natural Abundance

Trace / None

Half-life

17.0 s

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

β⁺

100.0%

Decay Chain

¹²³LaLanthanum17.0 s

β⁺100.0%

¹²³BaBarium2.70 min

β⁺100.0%

¹²³CsCesium5.88 min

β⁺100.0%

¹²³XeXenon2.08 h

β⁺100.0%

¹²³IIodine13.2 h

β⁺100.0%

¹²³TeTelluriumSTABLE

6-step decay chain → stable · Primary path shown

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