H Home Background Color: He Li Be Bismuth Main Page Black White Gray B C N O F Ne Na Mg Bismuth Pictures Page Al Si P S Cl Ar K Ca Bismuth 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 Bismuth (click to see decay chain): 184Bi  185Bi  186Bi  187Bi  188Bi  189Bi  190Bi  191Bi  192Bi  193Bi  194Bi  195Bi  196Bi  197Bi  198Bi  199Bi  200Bi  201Bi  202Bi  203Bi  204Bi  205Bi  206Bi  207Bi  208Bi  209Bi  210Bi  211Bi  212Bi  213Bi  214Bi  215Bi  216Bi  217Bi  218Bi  219Bi

209Bi     Half-life Boson, 83p 126n 1.899416539827×1019 y Spin 9/2 Parity -1 Hide Decay Modes Probability Mode Decay Energy Daughter 100% α 3.13721MeV 205Tl Show Ultimate Decay Products Atomic Weight 208.980398734 Abundance 1×102% Mass Excess -18.258461MeV Binding Energy 7.847985MeV Magnetic Moment 4.1106 μ Quadrupole Moment -0.37   Show Element Pictures. Show only decay products of this isotope. Show Decay Image Smaller.

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