Periodic Table/Lanthanum/¹¹⁷La

← 116La118La →

¹¹⁷La

Lanthanum-117

Radioactive· Half-life: 21.7 ms

Nuclear Propertiesbinding energy · spin-parity · abundance

Protons (Z)

57

Neutrons (N)

60

Mass Number (A)

117

Atomic Mass

116.950326AMU

Spin / Parity

3/2+

Binding E/A

7.837keV

Natural Abundance

Trace / None

Half-life

21.7 ms

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

p

100.0%

β⁺

β⁺p

Decay Chain

¹¹⁷LaLanthanum21.7 ms

p100.0%

β⁺¹¹⁷Ba

β⁺p¹¹⁶Cs

¹¹⁶BaBarium1.30 s

β⁺100.0%

β⁺p¹¹⁵Xe3.00%

¹¹⁶CsCesium700 ms

β⁺100.0%

β⁺p¹¹⁵I0.28%

β⁺α¹¹²Te0.05%

¹¹⁶XeXenon59.0 s

β⁺100.0%

¹¹⁶IIodine2.91 s

β⁺100.0%

¹¹⁶TeTellurium2.49 h

β⁺100.0%

¹¹⁶SbAntimony15.8 min

β⁺100.0%

¹¹⁶SnTinSTABLE

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