H Home Background Color: He Li Be Francium Main Page Black White Gray B C N O F Ne Na Mg Francium Pictures Page Al Si P S Cl Ar K Ca Francium 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 Francium (click to see decay chain): 199Fr  200Fr  201Fr  202Fr  203Fr  204Fr  205Fr  206Fr  207Fr  208Fr  209Fr  210Fr  211Fr  212Fr  213Fr  214Fr  215Fr  216Fr  217Fr  218Fr  219Fr  220Fr  221Fr  222Fr  223Fr  224Fr  225Fr  226Fr  227Fr  228Fr  229Fr  230Fr  231Fr  232Fr

207Fr     Half-life Boson, 87p 120n 14.8 s Spin 9/2 Parity -1 Hide Decay Modes Probability Mode Decay Energy Daughter 95% α 6.897MeV 203At 5% β+ 4.7672MeV 207Rn Hide Ultimate Decay Products Yield Nuclide 66.940458163% 203Tl 29.52326669397% 199Hg 3.6103% 207Pb Atomic Weight 206.996949414 Abundance None Mass Excess -2.841602MeV Binding Energy 7.756232MeV Magnetic Moment 3.89 μ Quadrupole Moment -0.16   Show Isotope Symbols. Show only decay products of this isotope.

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