H Home Background Color: He Li Be Cerium Main Page Black White Gray B C N O F Ne Na Mg Cerium Pictures Page Al Si P S Cl Ar K Ca Cerium 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 Cerium (click to see decay chain): 119Ce  120Ce  121Ce  122Ce  123Ce  124Ce  125Ce  126Ce  127Ce  128Ce  129Ce  130Ce  131Ce  132Ce  133Ce  134Ce  135Ce  136Ce  137Ce  138Ce  139Ce  140Ce  141Ce  142Ce  143Ce  144Ce  145Ce  146Ce  147Ce  148Ce  149Ce  150Ce  151Ce  152Ce  153Ce  154Ce  155Ce  156Ce  157Ce

121Ce     Half-life Fermion, 58p 63n 1.1 s Spin 5/2 Parity 1 Show Decay Modes Hide Ultimate Decay Products Yield Nuclide 99% 121Sb 2×10-7% 116Sn 7.000000000002×10-8% 119Sn Unknown 120Sn Atomic Weight 120.94342 Abundance None Mass Excess -52.704MeV Binding Energy 8.133MeV Magnetic Moment N/A 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..