H Home Background Color: He Li Be Cesium Main Page Black White Gray B C N O F Ne Na Mg Cesium Pictures Page Al Si P S Cl Ar K Ca Cesium Technical Data Sc Ti V Cr Mn Fe Co Ni Cu Zn Ga Ge As Se Br Kr Rb Sr Y Zr Nb Mo Tc Ru Rh Pd Ag Cd In Sn Sb Te I Xe Cs Ba La Ce Pr Nd Pm Sm Eu Gd Tb Dy Ho Er Tm Yb Lu Hf Ta W Re Os Ir Pt Au Hg Tl Pb Bi Po At Rn Fr Ra Ac Th Pa U Np Pu Am Cm Bk Cf Es Fm Md No Lr Rf Db Sg Bh Hs Mt Ds Rg Cn Nh Fl Mc Lv Ts Og

Isotopes of Cesium (click to see decay chain): 112Cs  113Cs  114Cs  115Cs  116Cs  117Cs  118Cs  119Cs  120Cs  121Cs  122Cs  123Cs  124Cs  125Cs  126Cs  127Cs  128Cs  129Cs  130Cs  131Cs  132Cs  133Cs  134Cs  135Cs  136Cs  137Cs  138Cs  139Cs  140Cs  141Cs  142Cs  143Cs  144Cs  145Cs  146Cs  147Cs  148Cs  149Cs  150Cs  151Cs

123Cs     Half-life Boson, 55p 68n 5.866666666667 m Spin 1/2 Parity 1 Hide Decay Modes Probability Mode Decay Energy Daughter 100% β+ 3.1827MeV 123Xe Hide Ultimate Decay Products Yield Nuclide 100% 123Sb Atomic Weight 122.912996036 Abundance None Mass Excess -81.043671MeV Binding Energy 8.380379MeV Magnetic Moment 1.377 μ Quadrupole Moment N/A   Show Element Pictures. Also show decay chains leading to this isotope. Show all decays, even very low-probability.

Click any isotope in diagram to see its data. Decay chain image generated by Mathematica's GraphPlot and IsotopeData functions from Wolfram Research, Inc..