H Home Background Color: He Li Be Astatine Main Page Black White Gray B C N O F Ne Na Mg Astatine Pictures Page Al Si P S Cl Ar K Ca Astatine 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 Astatine (click to see decay chain): 193At  194At  195At  196At  197At  198At  199At  200At  201At  202At  203At  204At  205At  206At  207At  208At  209At  210At  211At  212At  213At  214At  215At  216At  217At  218At  219At  220At  221At  222At  223At

197At     Half-life Boson, 85p 112n 388 ms Spin 9/2 Parity -1 Hide Decay Modes Probability Mode Decay Energy Daughter 96% α 7.1038MeV 193Bi 4% β+ 5.9916MeV 197Po Hide Ultimate Decay Products Yield Nuclide 3.36% 189Os 2.24% 197Au 2.24×10-6% 193Ir 2.016×10-6% 185Re 5.04×10-11% 181Ta Atomic Weight 196.993189215 Abundance None Mass Excess -6.344205MeV Binding Energy 7.76596MeV 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%. Show Decay Image Full Size.

Decay chain image generated by Mathematica's GraphPlot and IsotopeData functions from Wolfram Research, Inc..