Periodic Table/Lanthanum/¹⁵⁶La

← 155La157La →

¹⁵⁶La

Lanthanum-156

Radioactive· Half-life: 84.0 ms

Nuclear Propertiesbinding energy · spin-parity · abundance

Protons (Z)

57

Neutrons (N)

99

Mass Number (A)

156

Atomic Mass

155.964519AMU

Spin / Parity

4+

Binding E/A

7.811keV

Natural Abundance

Trace / None

Half-life

84.0 ms

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

β⁻

100.0%

β⁻n

Decay Chain

¹⁵⁶LaLanthanum84.0 ms

β⁻100.0%

β⁻n¹⁵⁵Ce

¹⁵⁶CeCerium233 ms

β⁻100.0%

β⁻n¹⁵⁵Pr

¹⁵⁶PrPraseodymium444 ms

β⁻100.0%

β⁻n¹⁵⁵Nd

¹⁵⁶NdNeodymium5.06 s

β⁻100.0%

¹⁵⁶PmPromethium27.4 s

β⁻100.0%

¹⁵⁶SmSamarium9.40 h

β⁻100.0%

¹⁵⁶EuEuropium15.2 d

β⁻100.0%

¹⁵⁶GdGadoliniumSTABLE

8-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