H Home Background Color: He Li Be Barium Main Page Black White Gray B C N O F Ne Na Mg Barium Pictures Page Al Si P S Cl Ar K Ca Barium 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 Barium (click to see decay chain): 114Ba  115Ba  116Ba  117Ba  118Ba  119Ba  120Ba  121Ba  122Ba  123Ba  124Ba  125Ba  126Ba  127Ba  128Ba  129Ba  130Ba  131Ba  132Ba  133Ba  134Ba  135Ba  136Ba  137Ba  138Ba  139Ba  140Ba  141Ba  142Ba  143Ba  144Ba  145Ba  146Ba  147Ba  148Ba  149Ba  150Ba  151Ba  152Ba  153Ba

121Ba     Half-life Fermion, 56p 65n 29.7 s Spin 5/2 Parity 1 Hide Decay Modes Probability Mode Decay Energy Daughter 100% β+ 5.336MeV 121Cs 0.02% β+p N/A 120Xe Hide Ultimate Decay Products Yield Nuclide 100% 121Sb Unknown 120Sn Atomic Weight 120.924054499 Abundance None Mass Excess -70.742779MeV Binding Energy 8.29389MeV Magnetic Moment 0.66 μ Quadrupole Moment 1.79   Show Isotope Symbols. 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..