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LiBeLanthanum Main PageBlack White GrayBCNOFNe
NaMgLanthanum Pictures PageAlSiPSClAr
KCaLanthanum Technical DataScTiVCrMnFeCoNiCuZnGaGeAsSeBrKr
RbSrYZrNbMoTcRuRhPdAgCdInSnSbTeIXe
CsBaLaCePrNdPmSmEuGdTbDyHoErTmYbLuHfTaWReOsIrPtAuHgTlPbBiPoAtRn
FrRaAcThPaUNpPuAmCmBkCfEsFmMdNoLrRfDbSgBhHsMtDsRgUubUutUuqUupUuhUusUuo

Isotopes of Lanthanum (click to see decay chain):
117La  118La  119La  120La  121La  122La  123La  124La  125La  126La  127La  128La  129La  130La  131La  132La  133La  134La  135La  136La  137La  138La  139La  140La  141La  142La  143La  144La  145La  146La  147La  148La  149La  150La  151La  152La  153La  154La  155La 

139La    Half-lifeBoson, 57p 82ntitle icon
StableSpin 7/2 Parity 1

This isotope is stable and thus has no decay products, so instead we show decay chains that lead down to it.
Atomic Weight138.906353267
Abundance99.91%
Mass Excess-87.231371MeV
Binding Energy8.378063MeV
Magnetic Moment2.7830455μ
Quadrupole Moment0.2
 
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Decay Chain Image

Decay chain image generated by Mathematica's GraphPlot and IsotopeData functions from Wolfram Research, Inc..