H Home Background Color: He Li Be Tantalum Main Page Black White Gray B C N O F Ne Na Mg Tantalum Pictures Page Al Si P S Cl Ar K Ca Tantalum 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 Tantalum (click to see decay chain): 155Ta  156Ta  157Ta  158Ta  159Ta  160Ta  161Ta  162Ta  163Ta  164Ta  165Ta  166Ta  167Ta  168Ta  169Ta  170Ta  171Ta  172Ta  173Ta  174Ta  175Ta  176Ta  177Ta  178Ta  179Ta  180Ta  181Ta  182Ta  183Ta  184Ta  185Ta  186Ta  187Ta  188Ta  189Ta  190Ta

155Ta     Half-life Boson, 73p 82n 13 µs Spin 11/2 Parity -1 Hide Decay Modes Probability Mode Decay Energy Daughter 100% p 1.776MeV 154Hf Hide Ultimate Decay Products Yield Nuclide Unknown 150Sm Unknown 142Nd Unknown 154Gd Atomic Weight 154.974592 Abundance None Mass Excess -23.668MeV Binding Energy 7.856MeV Magnetic Moment N/A Quadrupole Moment N/A   Show Isotope Symbols. Also show decay chains leading to this isotope. Show only decays with probability >0.1%.

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